{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T09:36:44Z","timestamp":1768469804723,"version":"3.49.0"},"reference-count":11,"publisher":"Springer Science and Business Media LLC","issue":"3-4","license":[{"start":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T00:00:00Z","timestamp":1648771200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T00:00:00Z","timestamp":1648771200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Queueing Syst"],"published-print":{"date-parts":[[2022,4]]},"DOI":"10.1007\/s11134-022-09761-y","type":"journal-article","created":{"date-parts":[[2022,5,5]],"date-time":"2022-05-05T06:02:53Z","timestamp":1651730573000},"page":"469-471","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The slow-server problem with multiple slow servers"],"prefix":"10.1007","volume":"100","author":[{"given":"Ger","family":"Koole","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,5,5]]},"reference":[{"key":"9761_CR1","doi-asserted-by":"publisher","first-page":"365","DOI":"10.2307\/3214845","volume":"30","author":"S Asmussen","year":"1993","unstructured":"Asmussen, S., Koole, G.M.: Marked point processes as limits of Markovian arrival streams. J. Appl. Probab. 30, 365\u2013372 (1993)","journal-title":"J. Appl. Probab."},{"key":"9761_CR2","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1007\/s11134-006-5067-8","volume":"52","author":"F de V\u00e9ricourt","year":"2006","unstructured":"de V\u00e9ricourt, F., Zhou, Y.-P.: On the incomplete results for the heterogeneous server problem. Queueing Syst. 52, 189\u2013191 (2006)","journal-title":"Queueing Syst."},{"key":"9761_CR3","doi-asserted-by":"publisher","first-page":"234","DOI":"10.2307\/1427742","volume":"24","author":"A Hordijk","year":"1992","unstructured":"Hordijk, A., Koole, G.M.: The $$\\mu c$$-rule is not optimal in the second node of the tandem queue: a counterexample. Adv. Appl. Probab. 24, 234\u2013237 (1992)","journal-title":"Adv. Appl. Probab."},{"key":"9761_CR4","doi-asserted-by":"publisher","first-page":"301","DOI":"10.1016\/0167-6911(95)00015-1","volume":"26","author":"GM Koole","year":"1995","unstructured":"Koole, G.M.: A simple proof of the optimality of a threshold policy in a two-server queueing system. Syst. Control Lett. 26, 301\u2013303 (1995)","journal-title":"Syst. Control Lett."},{"key":"9761_CR5","doi-asserted-by":"publisher","first-page":"323","DOI":"10.1023\/A:1019177307418","volume":"30","author":"GM Koole","year":"1998","unstructured":"Koole, G.M.: Structural results for the control of queueing systems using event-based dynamic programming. Queueing Syst. 30, 323\u2013339 (1998)","journal-title":"Queueing Syst."},{"key":"9761_CR6","doi-asserted-by":"publisher","first-page":"696","DOI":"10.1109\/TAC.1984.1103637","volume":"29","author":"W Lin","year":"1984","unstructured":"Lin, W., Kumar, P.R.: Optimal control of a queueing system with two heterogeneous servers. IEEE Trans. Autom. Control 29, 696\u2013703 (1984)","journal-title":"IEEE Trans. Autom. Control"},{"key":"9761_CR7","doi-asserted-by":"publisher","first-page":"121","DOI":"10.1007\/s001860100168","volume":"55","author":"HP Luh","year":"2002","unstructured":"Luh, H.P., Viniotis, I.: Threshold control policies for heterogeneous server systems. Math. Methods Oper. Res. 55, 121\u2013142 (2002)","journal-title":"Math. Methods Oper. Res."},{"key":"9761_CR8","doi-asserted-by":"publisher","first-page":"815","DOI":"10.2307\/3214386","volume":"27","author":"P Nain","year":"1989","unstructured":"Nain, P., Tsoucas, P., Walrand, J.: Interchange arguments in stochastic scheduling. J. Appl. Probab. 27, 815\u2013826 (1989)","journal-title":"J. Appl. Probab."},{"key":"9761_CR9","doi-asserted-by":"publisher","first-page":"391","DOI":"10.1023\/A:1010893501581","volume":"37","author":"VV Rykov","year":"2001","unstructured":"Rykov, V.V.: Monotone control of queueing systems with heterogeneous servers. Queueing Syst. 37, 391\u2013403 (2001)","journal-title":"Queueing Syst."},{"key":"9761_CR10","unstructured":"Sparaggis, P.D.,Towsley, D.: Optimal routing in systems with ILR service time distributions. CMPSCI Technical Report 93\u201313, University of Massachusetts at Amherst (1993)"},{"key":"9761_CR11","doi-asserted-by":"publisher","first-page":"406","DOI":"10.2307\/3213411","volume":"15","author":"RR Weber","year":"1978","unstructured":"Weber, R.R.: On the optimal assignment of customers to parallel queues. J. Appl. Probab. 15, 406\u2013413 (1978)","journal-title":"J. Appl. Probab."}],"container-title":["Queueing Systems"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s11134-022-09761-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s11134-022-09761-y\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s11134-022-09761-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,6,2]],"date-time":"2022-06-02T11:28:01Z","timestamp":1654169281000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s11134-022-09761-y"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,4]]},"references-count":11,"journal-issue":{"issue":"3-4","published-print":{"date-parts":[[2022,4]]}},"alternative-id":["9761"],"URL":"https:\/\/doi.org\/10.1007\/s11134-022-09761-y","relation":{},"ISSN":["0257-0130","1572-9443"],"issn-type":[{"value":"0257-0130","type":"print"},{"value":"1572-9443","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,4]]},"assertion":[{"value":"3 January 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"28 February 2022","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"5 May 2022","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}}]}}