{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,21]],"date-time":"2025-11-21T11:45:40Z","timestamp":1763725540206},"reference-count":15,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[1986,6,1]],"date-time":"1986-06-01T00:00:00Z","timestamp":517968000000},"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":9908,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Discrete Mathematics"],"published-print":{"date-parts":[[1986,6]]},"DOI":"10.1016\/0012-365x(86)90012-9","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T03:31:50Z","timestamp":1027654310000},"page":"199-206","source":"Crossref","is-referenced-by-count":7,"special_numbering":"C","title":["Few slopes without collinearity"],"prefix":"10.1016","volume":"60","author":[{"given":"Robert E.","family":"Jamison","sequence":"first","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0012-365X(86)90012-9_BIB1_1","first-page":"1277","article-title":"On a combinatorial problem","volume":"51","author":"de Bruijn","year":"1948","journal-title":"Neder. Akad. Wetensch. Proc."},{"key":"10.1016\/0012-365X(86)90012-9_BIB1_2","first-page":"421","volume":"10","year":"1948","journal-title":"Indagationes Math."},{"key":"10.1016\/0012-365X(86)90012-9_BIB2","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1007\/BF02992886","article-title":"Affinely regular polygons","volume":"34","author":"Coxeter","year":"1969","journal-title":"Abh. Math. Sem. Univ. Hamburg"},{"key":"10.1016\/0012-365X(86)90012-9_BIB3","first-page":"169","article-title":"Solution to Problem Nr. 4065","volume":"51","author":"Erd\u00f6s","year":"1944","journal-title":"Am. Math. Monthly"},{"key":"10.1016\/0012-365X(86)90012-9_BIB4","first-page":"383","article-title":"A combinatorial perspective on some problems in geometry","volume":"32","author":"Goodman","year":"1981","journal-title":"Congressus Num. (Proc. XII SE CGTC Conf.)"},{"key":"10.1016\/0012-365X(86)90012-9_BIB5","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1016\/0097-3165(84)90050-5","article-title":"Semispaces of configurations, cell complexes of arrangements","volume":"37","author":"Goodman","year":"1984","journal-title":"J. Combin. Theory Ser. A"},{"key":"10.1016\/0012-365X(86)90012-9_BIB6","series-title":"CBMS Regional Conf. Ser. in Math.","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1090\/cbms\/010\/02","article-title":"Arrangements and spreads","author":"Gr\u00fcnbaum","year":"1972"},{"key":"10.1016\/0012-365X(86)90012-9_BIB7","first-page":"104","article-title":"Diagonalen im regul\u00e4ren n-Eck","volume":"24","author":"Harborth","year":"1969","journal-title":"Elemente der Mathematik"},{"key":"10.1016\/0012-365X(86)90012-9_BIB8","first-page":"332","article-title":"Regelm\u00e4ssige Vielecke und ihre Diagonalen II","volume":"41","author":"Heineken","year":"1968","journal-title":"Rendiconti Sem. U. Padova"},{"key":"10.1016\/0012-365X(86)90012-9_BIB9","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1007\/BF00147419","article-title":"Planar configurations which determine few slopes","volume":"16","author":"Jamison","year":"1984","journal-title":"Geom. Dedicata"},{"key":"10.1016\/0012-365X(86)90012-9_BIB10","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1111\/j.1749-6632.1985.tb14537.x","article-title":"A survey of the slope problem","volume":"440","author":"Jamison","year":"1985","journal-title":"Discrete Geometry and Convexity, Ann. NY Acad. Sci."},{"key":"10.1016\/0012-365X(86)90012-9_BIB11","doi-asserted-by":"crossref","first-page":"210","DOI":"10.4153\/CJM-1958-024-6","article-title":"On the number of ordinary lines determined by n points","volume":"10","author":"Kelly","year":"1958","journal-title":"Canad. J. Math."},{"key":"10.1016\/0012-365X(86)90012-9_BIB12","first-page":"844","article-title":"Les polygones reguliers des plans affins arguesiens","volume":"63","author":"Nizette","year":"1977"},{"key":"10.1016\/0012-365X(86)90012-9_BIB13","doi-asserted-by":"crossref","first-page":"502","DOI":"10.2307\/2317384","article-title":"On the sets of directions determined by n-points","volume":"77","author":"Scott","year":"1970","journal-title":"Am. Math. Monthly"},{"key":"10.1016\/0012-365X(86)90012-9_BIB14","doi-asserted-by":"crossref","first-page":"343","DOI":"10.1016\/0097-3165(82)90045-0","article-title":"2N noncollinear points determine at least 2N directions","volume":"33","author":"Ungar","year":"1982","journal-title":"J. Combin. Theory Ser. A"}],"container-title":["Discrete Mathematics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0012365X86900129?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0012365X86900129?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,13]],"date-time":"2019-04-13T11:27:31Z","timestamp":1555154851000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0012365X86900129"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1986,6]]},"references-count":15,"alternative-id":["0012365X86900129"],"URL":"https:\/\/doi.org\/10.1016\/0012-365x(86)90012-9","relation":{},"ISSN":["0012-365X"],"issn-type":[{"value":"0012-365X","type":"print"}],"subject":[],"published":{"date-parts":[[1986,6]]}}}