{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T09:15:11Z","timestamp":1762161311982,"version":"3.41.0"},"reference-count":48,"publisher":"Springer Science and Business Media LLC","issue":"3-4","license":[{"start":{"date-parts":[[2017,4,18]],"date-time":"2017-04-18T00:00:00Z","timestamp":1492473600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61374040"],"award-info":[{"award-number":["61374040"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008139","name":"Hujiang Foundation of China","doi-asserted-by":"crossref","award":["C14002"],"award-info":[{"award-number":["C14002"]}],"id":[{"id":"10.13039\/501100008139","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Graduate Innovation program of Shanghai","award":["54-13-302-102"],"award-info":[{"award-number":["54-13-302-102"]}]},{"name":"The Scientific Innovation program","award":["13ZZ115"],"award-info":[{"award-number":["13ZZ115"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Intell Robot Syst"],"published-print":{"date-parts":[[2018,3]]},"DOI":"10.1007\/s10846-017-0554-1","type":"journal-article","created":{"date-parts":[[2017,4,18]],"date-time":"2017-04-18T11:44:22Z","timestamp":1492515862000},"page":"439-463","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Distributed Leaderless and Leader-Following Consensus Control of Multiple Euler-Lagrange Systems with Unknown Control Directions"],"prefix":"10.1007","volume":"89","author":[{"given":"Gang","family":"Wang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chaoli","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuan","family":"Cai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunfeng","family":"Ji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2017,4,18]]},"reference":[{"issue":"1","key":"554_CR1","doi-asserted-by":"publisher","first-page":"427","DOI":"10.1109\/TII.2012.2219061","volume":"9","author":"Y Cao","year":"2013","unstructured":"Cao, Y., Yu, W., Ren, W., Chen, G.: An overview of recent progress in the study of distributed multi-agent coordination. IEEE Trans. Ind. Informat. 9(1), 427\u2013438 (2013)","journal-title":"IEEE Trans. Ind. Informat."},{"issue":"7","key":"554_CR2","first-page":"1881","volume":"60","author":"H Su","year":"2013","unstructured":"Su, H., Chen, M.Z.Q., Lam, J., Lin, Z.: Semi-global leader-following consensus of linear multi-agent systems with input saturation via low gain feedback. IEEE Trans. Circ. Syst. I 60(7), 1881\u20131889 (2013)","journal-title":"IEEE Trans. Circ. Syst. I"},{"key":"554_CR3","unstructured":"Chen, H.: Robust stabilization for a class of dynamic feedback uncertain nonholonomic mobile robots with input saturation. Int. J. Control. Autom. Syst. 12, 1216\u20131224 (2014)"},{"issue":"3","key":"554_CR4","doi-asserted-by":"publisher","first-page":"525","DOI":"10.1007\/s10846-015-0316-x","volume":"83","author":"G Wang","year":"2016","unstructured":"Wang, G., Wang, C., Du, Q., Li, L., Dong, W.: Distributed cooperative control of multiple nonholonomic mobile robots. J. Intell. Robot. Syst. 83(3), 525\u2013541 (2016)","journal-title":"J. Intell. Robot. Syst."},{"issue":"5","key":"554_CR5","doi-asserted-by":"publisher","first-page":"1160","DOI":"10.1109\/TCST.2011.2163312","volume":"20","author":"A Zou","year":"2012","unstructured":"Zou, A., Kumar, K.D., Hou, Z.: Attitude coordination control for a group of spacecraft without velocity measurements. IEEE Trans. Control Syst. Technol. 20(5), 1160\u20131174 (2012)","journal-title":"IEEE Trans. Control Syst. Technol."},{"key":"554_CR6","volume-title":"Distributed sensor networks: A multiagent perspective","author":"V Lesser","year":"2012","unstructured":"Lesser, V., Ortiz, Jr, C.L., Tambe, M.: Distributed sensor networks: A multiagent perspective. Springer Science and Business Media, New York (2012)"},{"issue":"9","key":"554_CR7","doi-asserted-by":"publisher","first-page":"1520","DOI":"10.1109\/TAC.2004.834113","volume":"49","author":"R Olfati-Saber","year":"2004","unstructured":"Olfati-Saber, R., Murray, R.M.: Consensus problems in networks of agents with switching topology and time-delays. IEEE Trans. Autom. Control 49(9), 1520\u20131533 (2004)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"3","key":"554_CR8","doi-asserted-by":"publisher","first-page":"636","DOI":"10.1109\/TSMCB.2008.2007810","volume":"39","author":"Z Hou","year":"2009","unstructured":"Hou, Z., Cheng, L., Tan, M.: Decentralized robust adaptive control for the multiagent system consensus problem using neural networks. IEEE Trans. Syst., Man, Cybern. B 39(3), 636\u201347 (2009)","journal-title":"IEEE Trans. Syst., Man, Cybern. B"},{"key":"554_CR9","doi-asserted-by":"crossref","unstructured":"Wang, G., Wang, C., Li, L., Zhang, Z.: Designing distributed consensus protocols for second-order nonlinear multi-agents with unknown control directions under directed graphs. J. Franklin Inst. 354(1), 571\u2013592 (2016)","DOI":"10.1016\/j.jfranklin.2016.10.034"},{"issue":"8","key":"554_CR10","doi-asserted-by":"publisher","first-page":"1351","DOI":"10.1109\/TNN.2010.2050601","volume":"21","author":"L Cheng","year":"2010","unstructured":"Cheng, L., Hou, Z.-G., Tan, M., Lin, Y., Zhang, W.: Neural-network-based adaptive leader-following control for multiagent systems with uncertainties. IEEE Trans. Neural Netw. 21(8), 1351\u20131358 (2010)","journal-title":"IEEE Trans. Neural Netw."},{"issue":"3","key":"554_CR11","doi-asserted-by":"publisher","first-page":"334","DOI":"10.1002\/rnc.1829","volume":"23","author":"A Zou","year":"2013","unstructured":"Zou, A., Kumar, K.D., Hou, Z.: Distributed consensus control for multi-agent systems using terminal sliding mode and Chebyshev neural networks. Int. J. Robust Nonlinear Control 23(3), 334\u2013357 (2013)","journal-title":"Int. J. Robust Nonlinear Control"},{"issue":"8","key":"554_CR12","doi-asserted-by":"publisher","first-page":"1508","DOI":"10.1109\/TNNLS.2013.2293499","volume":"25","author":"Z Peng","year":"2014","unstructured":"Peng, Z., Wang, D., Zhang, H., Sun, G.: Distributed neural network control for adaptive synchronization of uncertain dynamical multiagent systems. IEEE Trans. Neural Netw. Learn. Syst. 25(8), 1508\u20131519 (2014)","journal-title":"IEEE Trans. Neural Netw. Learn. Syst."},{"issue":"7","key":"554_CR13","doi-asserted-by":"publisher","first-page":"1432","DOI":"10.1016\/j.automatica.2012.05.008","volume":"48","author":"H Zhang","year":"2012","unstructured":"Zhang, H., Lewis, F.L.: Adaptive cooperative tracking control of higher-order nonlinear systems with unknown dynamics. Automatica 48(7), 1432\u20131439 (2012)","journal-title":"Automatica"},{"issue":"4","key":"554_CR14","doi-asserted-by":"publisher","first-page":"1020","DOI":"10.1016\/j.automatica.2008.11.008","volume":"45","author":"H Bai","year":"2009","unstructured":"Bai, H., Arcak, M., Wen, J.T.: Adaptive motion coordination: Using relative velocity feedback to track a reference velocity. Automatica 45(4), 1020\u20131025 (2009)","journal-title":"Automatica"},{"issue":"8","key":"554_CR15","doi-asserted-by":"publisher","first-page":"1783","DOI":"10.1016\/j.automatica.2012.05.068","volume":"48","author":"H Yu","year":"2012","unstructured":"Yu, H., Xia, X.: Adaptive consensus of multi-agents in networks with jointly connected topologies. Automatica 48(8), 1783\u20131790 (2012)","journal-title":"Automatica"},{"issue":"4","key":"554_CR16","doi-asserted-by":"publisher","first-page":"653","DOI":"10.1016\/j.automatica.2012.01.020","volume":"48","author":"J Mei","year":"2012","unstructured":"Mei, J., Ren, W., Ma, G.: Distributed containment control for Lagrangian networks with parametric uncertainties under a directed graph. Automatica 48(4), 653\u2013659 (2012)","journal-title":"Automatica"},{"issue":"1-2","key":"554_CR17","doi-asserted-by":"publisher","first-page":"95","DOI":"10.1007\/s11071-013-0951-3","volume":"74","author":"Z Peng","year":"2013","unstructured":"Peng, Z., Wang, D., Li, T., Wu, Z.: Leaderless and leader-follower cooperative control of multiple marine surface vehicles with unknown dynamics. Nonlinear Dyn. 74(1-2), 95\u2013106 (2013)","journal-title":"Nonlinear Dyn."},{"key":"554_CR18","doi-asserted-by":"crossref","unstructured":"Cheng, L., Hou, Z.-G., Tan, M.: Decentralized adaptive consensus control for multi-manipulator system with uncertain dynamics. In: IEEE International Conference on Systems, Man and Cybernetics, pp. 2712\u20132717 (2008)","DOI":"10.1109\/ICSMC.2008.4811706"},{"issue":"11","key":"554_CR19","doi-asserted-by":"publisher","first-page":"2137","DOI":"10.1080\/00207170902948027","volume":"82","author":"W Ren","year":"2009","unstructured":"Ren, W.: Distributed leaderless consensus algorithms for networked Euler-Lagrange systems. Int. J. Control 82(11), 2137\u20132149 (2009)","journal-title":"Int. J. Control"},{"issue":"9","key":"554_CR20","doi-asserted-by":"publisher","first-page":"2023","DOI":"10.1016\/j.automatica.2011.05.025","volume":"47","author":"W Dong","year":"2011","unstructured":"Dong, W.: On consensus algorithms of multiple uncertain mechanical systems with a reference trajectory. Automatica 47(9), 2023\u20132028 (2011)","journal-title":"Automatica"},{"issue":"3","key":"554_CR21","doi-asserted-by":"publisher","first-page":"805","DOI":"10.1109\/TSMCB.2010.2095497","volume":"41","author":"G Chen","year":"2011","unstructured":"Chen, G., Lewis, F.L.: Distributed adaptive tracking control for synchronization of unknown networked Lagrangian systems. IEEE Trans. Syst., Man, Cybern. B 41(3), 805\u201316 (2011)","journal-title":"IEEE Trans. Syst., Man, Cybern. B"},{"issue":"11","key":"554_CR22","doi-asserted-by":"publisher","first-page":"1487","DOI":"10.1049\/iet-cta.2013.0205","volume":"7","author":"G Chen","year":"2013","unstructured":"Chen, G., Yue, Y., Song, Y.: Finite-time cooperative-tracking control for networked Euler-Lagrange systems. IET Control Theory Appl. 7(11), 1487\u20131497 (2013)","journal-title":"IET Control Theory Appl."},{"issue":"2","key":"554_CR23","doi-asserted-by":"publisher","first-page":"145","DOI":"10.1080\/00207721.2012.669869","volume":"45","author":"W Zhang","year":"2014","unstructured":"Zhang, W., Wang, Z., Guo, Y.: Backstepping-based synchronisation of uncertain networked Lagrangian systems. Int. J. Syst. Sci. 45(2), 145\u2013158 (2014)","journal-title":"Int. J. Syst. Sci."},{"issue":"6","key":"554_CR24","doi-asserted-by":"publisher","first-page":"1415","DOI":"10.1109\/TAC.2011.2109437","volume":"56","author":"J Mei","year":"2011","unstructured":"Mei, J., Ren, W., Ma, G.: Distributed coordinated tracking with a dynamic leader for multiple Euler-Lagrange systems. IEEE Trans. Autom. Control 56(6), 1415\u20131421 (2011)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"6","key":"554_CR25","doi-asserted-by":"publisher","first-page":"1024","DOI":"10.1109\/TAC.2006.876943","volume":"51","author":"C-C Cheah","year":"2006","unstructured":"Cheah, C.-C., Liu, C., Slotine, J.: Adaptive Jacobian tracking control of robots with uncertainties in kinematic, dynamic and actuator models. IEEE Trans. Autom. Control 51(6), 1024\u20131029 (2006)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"10","key":"554_CR26","doi-asserted-by":"publisher","first-page":"2312","DOI":"10.1016\/j.automatica.2009.06.007","volume":"45","author":"L Cheng","year":"2009","unstructured":"Cheng, L., Hou, Z.-G., Tan, M.: Adaptive neural network tracking control for manipulators with uncertain kinematics, dynamics and actuator model. Automatica 45(10), 2312\u20132318 (2009)","journal-title":"Automatica"},{"issue":"2","key":"554_CR27","doi-asserted-by":"publisher","first-page":"276","DOI":"10.1109\/9.341792","volume":"40","author":"J Kaloust","year":"1995","unstructured":"Kaloust, J., Qu, Z.: Continuous robust control design for nonlinear uncertain systems without a priori knowledge of control direction. IEEE Trans. Autom. Control 40(2), 276\u2013282 (1995)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"5","key":"554_CR28","doi-asserted-by":"publisher","first-page":"243","DOI":"10.1016\/0167-6911(83)90021-X","volume":"3","author":"RD Nussbaum","year":"1983","unstructured":"Nussbaum, R.D.: Some remarks on a conjecture in parameter adaptive control. Syst. Control Lett. 3(5), 243\u2013246 (1983)","journal-title":"Syst. Control Lett."},{"issue":"11","key":"554_CR29","doi-asserted-by":"publisher","first-page":"1617","DOI":"10.1109\/9.728882","volume":"43","author":"X Ye","year":"1998","unstructured":"Ye, X., Jiang, J.: Adaptive nonlinear design without a priori knowledge of control directions. IEEE Trans. Autom. Control 43(11), 1617\u20131621 (1998)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"8","key":"554_CR30","doi-asserted-by":"publisher","first-page":"1463","DOI":"10.1109\/TAC.2003.815049","volume":"48","author":"SS Ge","year":"2003","unstructured":"Ge, S.S., Wang, J.: Robust adaptive tracking for time-varying uncertain nonlinear systems with unknown control coefficients. IEEE Trans. Autom. Control 48(8), 1463\u20131469 (2003)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"2","key":"554_CR31","doi-asserted-by":"publisher","first-page":"358","DOI":"10.1109\/9.983380","volume":"47","author":"Z Ding","year":"2002","unstructured":"Ding, Z., Ye, X.: A flat-zone modification for robust adaptive control of nonlinear output feedback systems with unknown high-frequency gains. IEEE Trans. Autom. Control 47(2), 358\u2013363 (2002)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"1","key":"554_CR32","doi-asserted-by":"publisher","first-page":"499","DOI":"10.1109\/TSMCB.2003.817055","volume":"34","author":"SS Ge","year":"2004","unstructured":"Ge, S.S., Hong, F., Lee, T.H.: Adaptive neural control of nonlinear time-delay systems with unknown virtual control coefficients. IEEE Trans. Syst., Man, Cybern. B 34(1), 499\u2013516 (2004)","journal-title":"IEEE Trans. Syst., Man, Cybern. B"},{"issue":"7","key":"554_CR33","doi-asserted-by":"publisher","first-page":"1887","DOI":"10.1109\/TAC.2013.2293452","volume":"59","author":"W Chen","year":"2014","unstructured":"Chen, W., Li, X., Ren, W., Wen, C.: Adaptive consensus of multi-agent systems with unknown identical control directions based on a novel Nussbaum-type function. IEEE Trans. Autom. Control 59(7), 1887\u20131892 (2014)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"3","key":"554_CR34","doi-asserted-by":"publisher","first-page":"1289","DOI":"10.1007\/s11071-015-2068-3","volume":"81","author":"C Chen","year":"2015","unstructured":"Chen, C., Liu, Z., Zhang, Y., Chen, C.L.P.: Adaptive control of robotic systems with unknown actuator nonlinearities and control directions. Nonlinear Dyn. 81(3), 1289\u20131300 (2015)","journal-title":"Nonlinear Dyn."},{"issue":"10","key":"554_CR35","doi-asserted-by":"publisher","first-page":"2311","DOI":"10.1109\/TCYB.2015.2475363","volume":"46","author":"C Chen","year":"2016","unstructured":"Chen, C., Liu, Z., Zhang, Y., Chen, C.L., Xie, S.: Saturated Nussbaum function based approach for robotic systems with unknown actuator dynamics. IEEE Trans. Cybern. 46(10), 2311\u20132322 (2016)","journal-title":"IEEE Trans. Cybern."},{"issue":"3","key":"554_CR36","doi-asserted-by":"publisher","first-page":"49","DOI":"10.1177\/027836498700600303","volume":"6","author":"J-JE Slotine","year":"1987","unstructured":"Slotine, J.-J.E., Li, W.: On the adaptive control of robot manipulators. Int. J. Rob. Res. 6(3), 49\u201359 (1987)","journal-title":"Int. J. Rob. Res."},{"key":"554_CR37","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-84800-015-5","volume-title":"Distributed consensus in multi-vehicle cooperative control","author":"W Ren","year":"2008","unstructured":"Ren, W., Beard, R.W.: Distributed consensus in multi-vehicle cooperative control. Springer-Verlag, London (2008)"},{"issue":"12","key":"554_CR38","doi-asserted-by":"publisher","first-page":"1051","DOI":"10.1016\/j.sysconle.2011.09.020","volume":"60","author":"W Guo","year":"2011","unstructured":"Guo, W., L, J., Chen, S., Yu, X.: Second-order tracking control for leader-follower multi-agent flocking in directed graphs with switching topology. Syst. Control Lett. 60(12), 1051\u20131058 (2011)","journal-title":"Syst. Control Lett."},{"key":"554_CR39","volume-title":"Neural network control of robot manipulators and non-linear systems","author":"FL Lewis","year":"1998","unstructured":"Lewis, F.L., Jagannathan, S., Yesildirak, A.: Neural network control of robot manipulators and non-linear systems. Taylor and Francis, London (1998)"},{"key":"554_CR40","volume-title":"Robot modeling and control","author":"MW Spong","year":"2006","unstructured":"Spong, M.W., Hutchinson, S., Vidyasagar, M.: Robot modeling and control. Wiley, New York (2006)"},{"key":"554_CR41","doi-asserted-by":"crossref","unstructured":"Khosla, P.K., Kanade, T.: Parameter identification of robot dynamics. In: The 24th IEEE Conference on Decision and Control, pp. 1754\u20131760 (1985)","DOI":"10.1109\/CDC.1985.268838"},{"key":"554_CR42","volume-title":"Applied nonlinear control","author":"J-JE Slotine","year":"1991","unstructured":"Slotine, J.-J.E., Li, W.: Applied nonlinear control. Prentice-hall, Cliffs, NJ (1991)"},{"issue":"3","key":"554_CR43","doi-asserted-by":"publisher","first-page":"488","DOI":"10.1109\/TAC.2006.890321","volume":"52","author":"WE Dixon","year":"2007","unstructured":"Dixon, W.E.: Adaptive regulation of amplitude limited robot manipulators with uncertain kinematics and dynamics. IEEE Trans. Autom. Control 52(3), 488\u2013493 (2007)","journal-title":"IEEE Trans. Autom. Control"},{"key":"554_CR44","doi-asserted-by":"crossref","DOI":"10.1007\/978-0-387-74503-9","volume-title":"Linear and nonlinear programming","author":"DG Luenberger","year":"2008","unstructured":"Luenberger, D.G., Ye, Y.: Linear and nonlinear programming. Springer Science and Business Media, New York (2008)"},{"issue":"11","key":"554_CR45","doi-asserted-by":"publisher","first-page":"1241","DOI":"10.1109\/9.100933","volume":"36","author":"I Kanellakopoulos","year":"1991","unstructured":"Kanellakopoulos, I., Kokotovic, P., Morse, S.: Systematic design of adaptive controllers for feedback linearizable systems. IEEE Trans. Autom. Control 36(11), 1241\u20131253 (1991)","journal-title":"IEEE Trans. Autom. Control"},{"issue":"2","key":"554_CR46","doi-asserted-by":"publisher","first-page":"219","DOI":"10.1109\/TMECH.2009.2014057","volume":"14","author":"S Khoo","year":"2009","unstructured":"Khoo, S., Xie, L., Man, Z.: Robust finite-time consensus tracking algorithm for multirobot systems. IEEE\/ASME Trans. Mechatronics 14(2), 219\u2013228 (2009)","journal-title":"IEEE\/ASME Trans. Mechatronics"},{"issue":"3","key":"554_CR47","doi-asserted-by":"publisher","first-page":"209","DOI":"10.1016\/0167-6911(91)90050-O","volume":"16","author":"EP Ryan","year":"1991","unstructured":"Ryan, E.P.: A universal adaptive stabilizer for a class of nonlinear systems. Syst. Control Lett. 16(3), 209\u2013218 (1991)","journal-title":"Syst. Control Lett."},{"key":"554_CR48","doi-asserted-by":"crossref","unstructured":"Wang, W., Huang, J., Fan, H., Jiang, W.: Decentralized adaptive consensus control of uncertain nonlinear systems under directed topologies. In: The 34th Chinese Control Conference, pp. 7090\u20137095 (2015)","DOI":"10.1109\/ChiCC.2015.7260761"}],"container-title":["Journal of Intelligent & Robotic Systems"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s10846-017-0554-1\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s10846-017-0554-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s10846-017-0554-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T22:49:55Z","timestamp":1750200595000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/s10846-017-0554-1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,4,18]]},"references-count":48,"journal-issue":{"issue":"3-4","published-print":{"date-parts":[[2018,3]]}},"alternative-id":["554"],"URL":"https:\/\/doi.org\/10.1007\/s10846-017-0554-1","relation":{},"ISSN":["0921-0296","1573-0409"],"issn-type":[{"type":"print","value":"0921-0296"},{"type":"electronic","value":"1573-0409"}],"subject":[],"published":{"date-parts":[[2017,4,18]]},"assertion":[{"value":"21 November 2015","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"4 April 2017","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"18 April 2017","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}}]}}