{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T00:34:12Z","timestamp":1791938052985,"version":"4.3.4"},"reference-count":89,"publisher":"American Physical Society (APS)","issue":"7","license":[{"start":{"date-parts":[[2026,2,18]],"date-time":"2026-02-18T00:00:00Z","timestamp":1771372800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12475137"],"award-info":[{"award-number":["12475137"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["125B2105"],"award-info":[{"award-number":["125B2105"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","award":["885150"],"award-info":[{"award-number":["885150"]}],"id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008081","name":"Southeast University","doi-asserted-by":"publisher","award":["4007022506"],"award-info":[{"award-number":["4007022506"]}],"id":[{"id":"10.13039\/501100008081","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.aps.org"],"crossmark-restriction":true},"short-container-title":["Phys. Rev. Lett."],"accepted":{"date-parts":[[2026,1,28]]},"abstract":"\n For the first time, we implement the deep-neural-network-based variational Monte\u00a0Carlo approach for the multiquark bound states, whose complexity surpasses that of electron or nucleon systems due to strong SU(3) color interactions. We design a novel and high-efficiency architecture, DeepQuark, to address the unique challenges in multiquark systems such as stronger correlations, extra discrete quantum numbers, and intractable confinement interaction. Our method demonstrates competitive performance with state-of-the-art approaches, including diffusion Monte\u00a0Carlo and Gaussian expansion method, in the nucleon, doubly heavy tetraquark, and fully heavy tetraquark systems. Notably, it outperforms existing calculations for pentaquarks, exemplified by the triply heavy pentaquark. For the nucleon, we successfully incorporate three-body flux-tube confinement interactions without additional computational costs. In tetraquark systems, we consistently describe hadronic molecule\n \n \n \n \n T<\/a:mi>\n <\/a:mrow>\n \n c<\/a:mi>\n c<\/a:mi>\n <\/a:mrow>\n <\/a:msub>\n <\/a:mrow>\n <\/a:math>\n and compact tetraquark\n \n \n \n \n T<\/c:mi>\n <\/c:mrow>\n \n b<\/c:mi>\n b<\/c:mi>\n <\/c:mrow>\n <\/c:msub>\n <\/c:mrow>\n <\/c:math>\n with an unbiased form of wave function ansatz. In the pentaquark sector, we obtain weakly bound\n \n \n \n \n \n \n D<\/e:mi>\n <\/e:mrow>\n \n \u00af<\/e:mo>\n <\/e:mrow>\n <\/e:mover>\n <\/e:mrow>\n \n *<\/e:mo>\n <\/e:mrow>\n <\/e:msup>\n \n \n \u039e<\/e:mi>\n <\/e:mrow>\n \n c<\/e:mi>\n c<\/e:mi>\n <\/e:mrow>\n \n *<\/e:mo>\n <\/e:mrow>\n <\/e:msubsup>\n <\/e:mrow>\n <\/e:math>\n molecule\n \n \n \n \n P<\/j:mi>\n <\/j:mrow>\n \n c<\/j:mi>\n c<\/j:mi>\n \n \n c<\/j:mi>\n <\/j:mrow>\n \n \u00af<\/j:mo>\n <\/j:mrow>\n <\/j:mover>\n <\/j:mrow>\n <\/j:msub>\n (<\/j:mo>\n 5715<\/j:mn>\n )<\/j:mo>\n <\/j:mrow>\n <\/j:math>\n with\n \n \n S<\/p:mi>\n =<\/p:mo>\n \n \n 5<\/p:mn>\n <\/p:mrow>\n \n 2<\/p:mn>\n <\/p:mrow>\n <\/p:mfrac>\n <\/p:mrow>\n <\/p:math>\n and its bottom partner\n \n \n \n \n P<\/r:mi>\n <\/r:mrow>\n \n b<\/r:mi>\n b<\/r:mi>\n \n \n b<\/r:mi>\n <\/r:mrow>\n \n \u00af<\/r:mo>\n <\/r:mrow>\n <\/r:mover>\n <\/r:mrow>\n <\/r:msub>\n (<\/r:mo>\n 15569<\/r:mn>\n )<\/r:mo>\n <\/r:mrow>\n <\/r:math>\n . They can be viewed as the analogs of the molecular\n \n \n \n \n T<\/x:mi>\n <\/x:mrow>\n \n c<\/x:mi>\n c<\/x:mi>\n <\/x:mrow>\n <\/x:msub>\n <\/x:mrow>\n <\/x:math>\n . We recommend experimental search of\n \n \n \n \n P<\/z:mi>\n <\/z:mrow>\n \n c<\/z:mi>\n c<\/z:mi>\n \n \n c<\/z:mi>\n <\/z:mrow>\n \n \u00af<\/z:mo>\n <\/z:mrow>\n <\/z:mover>\n <\/z:mrow>\n <\/z:msub>\n (<\/z:mo>\n 5715<\/z:mn>\n )<\/z:mo>\n <\/z:mrow>\n <\/z:math>\n in the D-wave\n \n \n J<\/fb:mi>\n \/<\/fb:mo>\n \u03c8<\/fb:mi>\n \n \n \u039b<\/fb:mi>\n <\/fb:mrow>\n \n c<\/fb:mi>\n <\/fb:mrow>\n <\/fb:msub>\n <\/fb:mrow>\n <\/fb:math>\n channel. DeepQuark holds great promise for extension to larger multiquark systems, overcoming the computational barriers in conventional methods. It also serves as a powerful framework for exploring confining mechanism beyond two-body interactions in multiquark states, which may offer valuable insights into nonperturbative QCD and general many-body physics.\n <\/jats:p>","DOI":"10.1103\/ckpr-s876","type":"journal-article","created":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T23:34:33Z","timestamp":1769643273000},"update-policy":"https:\/\/doi.org\/10.1103\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["DeepQuark: A Deep-Neural-Network Approach to Multiquark Bound States"],"prefix":"10.1103","volume":"136","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-3480-8810","authenticated-orcid":true,"given":"Wei-Lin","family":"Wu","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02v51f717","id-type":"ROR","asserted-by":"publisher"}],"name":"Peking University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9791-7138","authenticated-orcid":true,"given":"Lu","family":"Meng","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04ct4d772","id-type":"ROR","asserted-by":"publisher"}],"name":"Southeast University"},{"id":[{"id":"https:\/\/ror.org\/04tsk2644","id-type":"ROR","asserted-by":"publisher"}],"name":"Ruhr-Universit\u00e4t Bochum"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4055-6906","authenticated-orcid":true,"given":"Shi-Lin","family":"Zhu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02v51f717","id-type":"ROR","asserted-by":"publisher"}],"name":"Peking University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"16","published-online":{"date-parts":[[2026,2,18]]},"reference":[{"key":"ckpr-s876Cc1R1","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-9163(64)92001-3","type":"journal-article"},{"key":"ckpr-s876Cc2R1","doi-asserted-by":"publisher","DOI":"10.17181\/CERN-TH-401","type":"other"},{"key":"ckpr-s876Cc3R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.91.262001","type":"journal-article"},{"key":"ckpr-s876Cc4R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.110.252001","type":"journal-article"},{"key":"ckpr-s876Cc5R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.110.252002","type":"journal-article"},{"key":"ckpr-s876Cc5R2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.111.019901","type":"journal-article"},{"key":"ckpr-s876Cc6R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41567-022-01614-y","type":"journal-article"},{"key":"ckpr-s876Cc7R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-022-30206-w","type":"journal-article"},{"key":"ckpr-s876Cc8R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.115.072001","type":"journal-article"},{"key":"ckpr-s876Cc9R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.122.222001","type":"journal-article"},{"key":"ckpr-s876Cc10R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scib.2020.08.032","type":"journal-article"},{"key":"ckpr-s876Cc11R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physrep.2016.05.004","type":"journal-article"},{"key":"ckpr-s876Cc12R1","doi-asserted-by":"publisher","DOI":"10.1093\/ptep\/ptw045","type":"journal-article"},{"key":"ckpr-s876Cc13R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ppnp.2016.11.003","type":"journal-article"},{"key":"ckpr-s876Cc14R1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.90.015004","type":"journal-article"},{"key":"ckpr-s876Cc14R2","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.94.029901","type":"journal-article"},{"key":"ckpr-s876Cc15R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ppnp.2019.04.003","type":"journal-article"},{"key":"ckpr-s876Cc16R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physrep.2020.05.001","type":"journal-article"},{"key":"ckpr-s876Cc17R1","doi-asserted-by":"publisher","DOI":"10.1088\/1361-6633\/aca3b6","type":"journal-article"},{"key":"ckpr-s876Cc18R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physrep.2023.04.003","type":"journal-article"},{"key":"ckpr-s876Cc19R1","doi-asserted-by":"publisher","DOI":"10.15302\/frontphys.2026.016300","type":"journal-article"},{"key":"ckpr-s876Cc20R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.72.014505","type":"journal-article"},{"key":"ckpr-s876Cc21R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.86.014503","type":"journal-article"},{"key":"ckpr-s876Cc22R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.94.094032","type":"journal-article"},{"key":"ckpr-s876Cc23R1","doi-asserted-by":"publisher","DOI":"10.1016\/S0146-6410(03)90015-9","type":"journal-article"},{"key":"ckpr-s876Cc24R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.94.170201","type":"journal-article"},{"key":"ckpr-s876Cc25R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevC.98.045208","type":"journal-article"},{"key":"ckpr-s876Cc26R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.104.114028","type":"journal-article"},{"key":"ckpr-s876Cc27R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.105.014027","type":"journal-article"},{"key":"ckpr-s876Cc28R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.106.014005","type":"journal-article"},{"key":"ckpr-s876Cc29R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.105.074032","type":"journal-article"},{"key":"ckpr-s876Cc30R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.111.056013","type":"journal-article"},{"key":"ckpr-s876Cc31R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.110.094024","type":"journal-article"},{"key":"ckpr-s876Cc32R1","doi-asserted-by":"publisher","DOI":"10.1038\/nature14539","type":"journal-article"},{"key":"ckpr-s876Cc33R1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.91.045002","type":"journal-article"},{"key":"ckpr-s876Cc34R1","doi-asserted-by":"publisher","DOI":"10.1561\/2200000115","type":"journal-article"},{"key":"ckpr-s876Cc35R1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aag2302","type":"journal-article"},{"key":"ckpr-s876Cc36R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcp.2019.108929","type":"journal-article"},{"key":"ckpr-s876Cc37R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevResearch.2.033429","type":"journal-article"},{"key":"ckpr-s876Cc38R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41557-020-0544-y","type":"journal-article"},{"key":"ckpr-s876Cc39R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-022-35627-1","type":"journal-article"},{"key":"ckpr-s876Cc40R1","doi-asserted-by":"publisher","DOI":"10.1038\/s42005-024-01613-w","type":"journal-article"},{"key":"ckpr-s876Cc41R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physletb.2020.135743","type":"journal-article"},{"key":"ckpr-s876Cc42R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.127.022502","type":"journal-article"},{"key":"ckpr-s876Cc43R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physletb.2022.137587","type":"journal-article"},{"key":"ckpr-s876Cc44R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevC.107.034320","type":"journal-article"},{"key":"ckpr-s876Cc45R1","doi-asserted-by":"publisher","DOI":"10.1088\/0256-307X\/42\/5\/051201","type":"journal-article"},{"key":"ckpr-s876Cc46R1","doi-asserted-by":"publisher","DOI":"10.1038\/s42005-025-02015-2","type":"journal-article"},{"key":"ckpr-s876Cc47R1","doi-asserted-by":"publisher","DOI":"10.1103\/45g7-bmp6","type":"journal-article"},{"key":"ckpr-s876Cc48R1","doi-asserted-by":"publisher","DOI":"10.1016\/0893-6080(89)90020-8","type":"journal-article"},{"key":"ckpr-s876Cc50R1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01413104","type":"journal-article"},{"key":"ckpr-s876Cc51R1","doi-asserted-by":"publisher","DOI":"10.1007\/s006010050028","type":"journal-article"},{"key":"ckpr-s876Cc52R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.17.3090","type":"journal-article"},{"key":"ckpr-s876Cc52R2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.21.313.2","type":"journal-article"},{"key":"ckpr-s876Cc53R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.21.203","type":"journal-article"},{"key":"ckpr-s876Cc54R1","doi-asserted-by":"publisher","DOI":"10.1016\/0550-3213(75)90019-X","type":"journal-article"},{"key":"ckpr-s876Cc55R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.86.18","type":"journal-article"},{"key":"ckpr-s876Cc56R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.65.114509","type":"journal-article"},{"key":"ckpr-s876Cc57R1","unstructured":"See Supplemental Material at http:\/\/link.aps.org\/supplemental\/10.1103\/ckpr-s876 for additional details on the quark potential model, neural-network optimization process and results of electron systems, which include Refs.\u00a0[42,44,50,51,55,56,58\u201373].","type":"other"},{"key":"ckpr-s876Cc58R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.107.054035","type":"journal-article"},{"key":"ckpr-s876Cc59R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.108.114016","type":"journal-article"},{"key":"ckpr-s876Cc60R1","unstructured":"J. Bradbury et al., jax: Composable Transformations of Python+NumPy Programs (2018).","type":"other"},{"key":"ckpr-s876Cc61R1","unstructured":"J. Heek et al., flax: A Neural Network Library and Ecosystem for jax (2024).","type":"other"},{"key":"ckpr-s876Cc62R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.softx.2019.100311","type":"journal-article"},{"key":"ckpr-s876Cc63R1","doi-asserted-by":"publisher","DOI":"10.21468\/SciPostPhysCodeb.7","type":"journal-article"},{"key":"ckpr-s876Cc64R1","doi-asserted-by":"publisher","DOI":"10.1088\/0954-3899\/31\/5\/017","type":"journal-article"},{"key":"ckpr-s876Cc65R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevA.47.3671","type":"journal-article"},{"key":"ckpr-s876Cc66R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.110.030001","type":"journal-article"},{"key":"ckpr-s876Cc67R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.84.094029","type":"journal-article"},{"key":"ckpr-s876Cc68R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevA.48.4780","type":"journal-article"},{"key":"ckpr-s876Cc69R1","doi-asserted-by":"publisher","DOI":"10.1093\/biomet\/57.1.97","type":"journal-article"},{"key":"ckpr-s876Cc70R1","doi-asserted-by":"publisher","DOI":"10.1063\/1.1699114","type":"journal-article"},{"key":"ckpr-s876Cc71R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.71.241103","type":"journal-article"},{"key":"ckpr-s876Cc72R1","unstructured":"Y.-B. Yang, Quark mass and low energy constant in the continuum using the CLQCD ensembles, The 3th Chinese Lattice QCD workshop (2023), https:\/\/indico.ihep.ac.cn\/event\/19002\/contributions\/142210\/.","type":"other"},{"key":"ckpr-s876Cc73R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevA.74.052502","type":"journal-article"},{"key":"ckpr-s876Cc74R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.111.073001","type":"journal-article"},{"key":"ckpr-s876Cc75R1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01557611","type":"journal-article"},{"key":"ckpr-s876Cc76R1","doi-asserted-by":"publisher","DOI":"10.1016\/0550-3213(93)90614-U","type":"journal-article"},{"key":"ckpr-s876Cc77R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.118.142001","type":"journal-article"},{"key":"ckpr-s876Cc78R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.99.034507","type":"journal-article"},{"key":"ckpr-s876Cc79R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.132.111901","type":"journal-article"},{"key":"ckpr-s876Cc80R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.131.151902","type":"journal-article"},{"key":"ckpr-s876Cc81R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586-025-09711-7","type":"journal-article"},{"key":"ckpr-s876Cc82R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.109.054034","type":"journal-article"},{"key":"ckpr-s876Cc83R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.88.114008","type":"journal-article"},{"key":"ckpr-s876Cc84R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.110.094041","type":"journal-article"},{"key":"ckpr-s876Cc85R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.88.054014","type":"journal-article"},{"key":"ckpr-s876Cc86R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevD.110.076014","type":"journal-article"},{"key":"ckpr-s876Cc87R1","unstructured":"W.-L. Wu, DeepQuark (2026), https:\/\/github.com\/wlwuphy\/DeepQuark.","type":"other"}],"container-title":["Physical Review Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.aps.org\/article\/10.1103\/ckpr-s876","content-type":"unspecified","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/harvest.aps.org\/v2\/journals\/articles\/10.1103\/ckpr-s876\/fulltext","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T22:47:43Z","timestamp":1790722063000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.aps.org\/doi\/10.1103\/ckpr-s876"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,18]]},"references-count":89,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2026,2]]}},"URL":"https:\/\/doi.org\/10.1103\/ckpr-s876","relation":{"has-preprint":[{"id-type":"doi","id":"10.48550\/arXiv.2506.20555","asserted-by":"subject"}]},"ISSN":["0031-9007","1079-7114"],"issn-type":[{"value":"0031-9007","type":"print"},{"value":"1079-7114","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,18]]},"assertion":[{"value":"2025-08-10","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"Published by the American Physical Society. All rights are reserved, including those for text and data mining, AI training, and similar technologies.","name":"copyright_statement","label":"Copyright statement","group":{"name":"copyright","label":"copyright"}},{"value":"2026","name":"copyright_year","label":"Copyright year","group":{"name":"copyright","label":"copyright"}},{"value":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","name":"creative_commons_license","label":"Creative Commons license","group":{"name":"licenses","label":"Licenses"}},{"value":"\u00a92026 The authors","name":"copyright_holder","label":"Copyright holder","group":{"name":"copyright","label":"copyright"}}],"article-number":"071901"}}