{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T12:46:21Z","timestamp":1761309981611},"reference-count":21,"publisher":"Elsevier BV","issue":"1-3","license":[{"start":{"date-parts":[[1988,3,1]],"date-time":"1988-03-01T00:00:00Z","timestamp":573177600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2013,7,17]],"date-time":"2013-07-17T00:00:00Z","timestamp":1374019200000},"content-version":"vor","delay-in-days":9269,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Discrete Applied Mathematics"],"published-print":{"date-parts":[[1988,3]]},"DOI":"10.1016\/0166-218x(88)90003-0","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T03:43:01Z","timestamp":1027654981000},"page":"5-16","source":"Crossref","is-referenced-by-count":10,"title":["Alternating 6-cycles in perfect matchings of graphs representing condensed benzenoid hydrocarbons"],"prefix":"10.1016","volume":"19","author":[{"given":"Alexandru T.","family":"Balaban","sequence":"first","affiliation":[]},{"given":"Ioan","family":"Tomescu","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0166-218X(88)90003-0_BIB1","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1016\/0166-1280(85)85100-9","article-title":"Graph theory and theoretical chemistry","volume":"120","author":"Balaban","year":"1985","journal-title":"J. Mol. Struct. THEOCHEM"},{"key":"10.1016\/0166-218X(88)90003-0_BIB2","doi-asserted-by":"crossref","first-page":"2505","DOI":"10.1016\/S0040-4020(01)82523-0","article-title":"Chemical graphs, V: Enumeration and proposed nomenclature of benzenoid k-condensed polycyclic aromatic hydrocarbons","volume":"24","author":"Balaban","year":"1968","journal-title":"Tetrahedron"},{"key":"10.1016\/0166-218X(88)90003-0_BIB3","volume":"Vol. 1","author":"Balaban","year":"1987"},{"issue":"3","key":"10.1016\/0166-218X(88)90003-0_BIB4","first-page":"391","article-title":"Chemical graphs, XL: Three relations between the Fibonacci sequence and the numbers of Kekul\u00e9 structures for non-branched cata-condensed polycyclic aromatic hydrocarbons","volume":"57","author":"Balaban","year":"1984","journal-title":"Croatica Chemica Acta"},{"key":"10.1016\/0166-218X(88)90003-0_BIB5","first-page":"155","article-title":"Algebraic expressions for the number of Kekul\u00e9 structures of isoarithmic cata-condensed benzenoid polycyclic hydrocarbons","volume":"14","author":"Balaban","year":"1983","journal-title":"Mathematical Chemistry"},{"key":"10.1016\/0166-218X(88)90003-0_BIB6","first-page":"91","article-title":"Chemical graphs, XLI: Numbers of conjugated circuits and Kekul\u00e9 structures for zig-zag catafusenes and (j, k)-hexes; generalized Fibonacci numbers","volume":"17","author":"Balaban","year":"1985","journal-title":"Mathematical Chemistry"},{"key":"10.1016\/0166-218X(88)90003-0_BIB7","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1002\/jcc.540010207","article-title":"Graph theoretical characterization and computer generation of certain carcinogenic benzenoid hydrocarbons and identification of bay regions","volume":"1","author":"Balasubramanian","year":"1980","journal-title":"J. Comput. Chem."},{"key":"10.1016\/0166-218X(88)90003-0_BIB8","first-page":"167","article-title":"Group-theoretical treatment of Kekul\u00e9 structures","volume":"13","author":"Cyvin","year":"1982","journal-title":"Mathematical Chemistry"},{"key":"10.1016\/0166-218X(88)90003-0_BIB9","doi-asserted-by":"crossref","first-page":"428","DOI":"10.1063\/1.1700437","article-title":"Resonance topology of fully aromatic hydrocarbons","volume":"20","author":"Gordon","year":"1952","journal-title":"J. Chem. Phys."},{"key":"10.1016\/0166-218X(88)90003-0_BIB10","first-page":"561","article-title":"Why are the properties of polycyclic hydrocarbons additive over conjugation circuits?","volume":"53","author":"Gomes","year":"1980","journal-title":"Croat. Chem. Acta"},{"key":"10.1016\/0166-218X(88)90003-0_BIB11","first-page":"82","article-title":"A quasi-topological method for the calculation of relative \u2018ring-current\u2019 intensities in polycyclic conjugated hydrocarbons","volume":"21","author":"Gomes","year":"1979","journal-title":"Rev. Portug. Quim."},{"key":"10.1016\/0166-218X(88)90003-0_BIB12","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1007\/BF02394586","article-title":"On the calculation of the acyclic polynomial","volume":"48","author":"Gutman","year":"1978","journal-title":"Theor. Chim. Acta"},{"key":"10.1016\/0166-218X(88)90003-0_BIB13","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1080\/0020739730040302","article-title":"A graphical model of a class of molecules","volume":"4","author":"Hall","year":"1973","journal-title":"Int. J. Math. Educ. Sci. Tech."},{"key":"10.1016\/0166-218X(88)90003-0_BIB14","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1021\/ed051p10","article-title":"Resonance theory and the enumeration of Kekul\u00e9 structures","volume":"51","author":"Herndon","year":"1974","journal-title":"J. Chem. Educ."},{"key":"10.1016\/0166-218X(88)90003-0_BIB15","doi-asserted-by":"crossref","first-page":"4659","DOI":"10.1016\/S0040-4039(00)91045-1","article-title":"Sextet polynomial. A new enumeration and proof technique for resonance theory applied to the aromatic hydrocarbons","author":"Hosoya","year":"1975","journal-title":"Tetrahedron Letters"},{"key":"10.1016\/0166-218X(88)90003-0_BIB16","doi-asserted-by":"crossref","first-page":"444","DOI":"10.1021\/ja00444a022","article-title":"Aromaticity and conjugation","volume":"99","author":"Randi\u0107","year":"1977","journal-title":"J. Amer. Chem. Soc."},{"key":"10.1016\/0166-218X(88)90003-0_BIB17","doi-asserted-by":"crossref","first-page":"1587","DOI":"10.1351\/pac198052061587","article-title":"Local aromatic properties of benzenoid hydrocarbons","volume":"52","author":"Randi\u0107","year":"1980","journal-title":"Pure Appl. Chem."},{"key":"10.1016\/0166-218X(88)90003-0_BIB18","series-title":"Combinatorial Identities","author":"Riordan","year":"1968"},{"key":"10.1016\/0166-218X(88)90003-0_BIB19","series-title":"Chemical Applications of Graph Theory","first-page":"175","article-title":"The topological matrix in quantum chemistry","author":"Rouvray","year":"1976"},{"key":"10.1016\/0166-218X(88)90003-0_BIB20","doi-asserted-by":"crossref","first-page":"1097","DOI":"10.1351\/pac198254051097","article-title":"A comparison of recent theoretical aromaticity indices","volume":"54","author":"Schaad","year":"1982","journal-title":"Pure Appl. Chem."},{"key":"10.1016\/0166-218X(88)90003-0_BIB21","volume":"Vol. 2","author":"Trinajsti\u0107","year":"1983"}],"container-title":["Discrete Applied Mathematics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0166218X88900030?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0166218X88900030?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,13]],"date-time":"2019-04-13T05:53:53Z","timestamp":1555134833000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0166218X88900030"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1988,3]]},"references-count":21,"journal-issue":{"issue":"1-3","published-print":{"date-parts":[[1988,3]]}},"alternative-id":["0166218X88900030"],"URL":"https:\/\/doi.org\/10.1016\/0166-218x(88)90003-0","relation":{},"ISSN":["0166-218X"],"issn-type":[{"value":"0166-218X","type":"print"}],"subject":[],"published":{"date-parts":[[1988,3]]}}}