{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T04:01:52Z","timestamp":1785902512618,"version":"3.56.0"},"reference-count":23,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[1995,1,1]],"date-time":"1995-01-01T00:00:00Z","timestamp":788918400000},"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":6772,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["European Journal of Combinatorics"],"published-print":{"date-parts":[[1995,1]]},"DOI":"10.1016\/0195-6698(95)90092-6","type":"journal-article","created":{"date-parts":[[2004,8,5]],"date-time":"2004-08-05T00:27:27Z","timestamp":1091665647000},"page":"87-92","source":"Crossref","is-referenced-by-count":16,"title":["Ovoids of the quadric Q(2n, q)"],"prefix":"10.1016","volume":"16","author":[{"given":"Christine M","family":"O'Keefe","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.A","family":"Thas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/0195-6698(95)90092-6_BIB1","first-page":"96","article-title":"Un'estensione del teorema di Segre-Kustaanheimo","volume":"10","author":"Barlotti","year":"1955","journal-title":"Boll. Un. Mat. Ital."},{"key":"10.1016\/0195-6698(95)90092-6_BIB2","series-title":"Combinatorial Mathematics and its Applications (University of North Carolina, 1967)","first-page":"426","article-title":"Construction problems of finite projective planes","author":"Bruck","year":"1969"},{"key":"10.1016\/0195-6698(95)90092-6_BIB3","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1007\/BF00182289","article-title":"The collineation groups of the translation planes of order 25","volume":"39","author":"Czerwinski","year":"1991","journal-title":"Geom. Ded."},{"key":"10.1016\/0195-6698(95)90092-6_BIB4","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/0097-3165(92)90065-3","article-title":"The translation planes of order twenty-five","volume":"59","author":"Czerwinski","year":"1992","journal-title":"J. Combin. Theory, Ser. A"},{"key":"10.1016\/0195-6698(95)90092-6_BIB5","first-page":"341","article-title":"Translation planes of order 25 with non-trivial X-OY perspectivities","volume":"23\u201324","author":"Davis","year":"1979"},{"key":"10.1016\/0195-6698(95)90092-6_BIB6","first-page":"170","article-title":"Gli ovaloidi di uno spazio tridimensionale di Galois di ordine 8","volume":"32","author":"Fellegara","year":"1962","journal-title":"Atti Accad. Naz. Lincei Rend."},{"key":"10.1016\/0195-6698(95)90092-6_BIB7","series-title":"Finite Projective Spaces of Three Dimensions","author":"Hirschfeld","year":"1985"},{"key":"10.1016\/0195-6698(95)90092-6_BIB8","series-title":"General Galois Geometries","author":"Hirschfeld","year":"1991"},{"key":"10.1016\/0195-6698(95)90092-6_BIB9","doi-asserted-by":"crossref","first-page":"1195","DOI":"10.4153\/CJM-1982-082-0","article-title":"Ovoids and translation planes","volume":"34","author":"Kantor","year":"1982","journal-title":"Can. J. Math."},{"key":"10.1016\/0195-6698(95)90092-6_BIB10","unstructured":"R. Mathon and G. F. Royle, Translation planes of order 49, submitted."},{"key":"10.1016\/0195-6698(95)90092-6_BIB11","article-title":"Spreads in three-dimensional projective space","author":"Oakden","year":"1973"},{"key":"10.1016\/0195-6698(95)90092-6_BIB12","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1007\/BF01222898","article-title":"Ovoids of PG(3, 16) are elliptic quadrics","volume":"38","author":"O'Keefe","year":"1990","journal-title":"J. Geom."},{"key":"10.1016\/0195-6698(95)90092-6_BIB13","doi-asserted-by":"crossref","first-page":"140","DOI":"10.1007\/BF01228289","article-title":"Ovoids of PG(3, 16) are elliptic quadrics, II","volume":"44","author":"O'Keefe","year":"1992","journal-title":"J. Geom."},{"key":"10.1016\/0195-6698(95)90092-6_BIB14","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1007\/BF01222671","article-title":"Classification of ovoids in PG(3,32)","volume":"50","author":"O'Keefe","year":"1994","journal-title":"J. Geom."},{"key":"10.1016\/0195-6698(95)90092-6_BIB15","first-page":"507","article-title":"Caratterizzazione delle quadriche di uno spazio (tridimensionale) lineare sopra un corpo finito","volume":"10","author":"Panella","year":"1955","journal-title":"Boll. Un. Mat. Ital."},{"key":"10.1016\/0195-6698(95)90092-6_BIB16","doi-asserted-by":"crossref","first-page":"365","DOI":"10.1016\/0097-3165(76)90031-5","article-title":"A four-dimensional Kerdock set over GF(2)","volume":"20","author":"Patterson","year":"1976","journal-title":"J. Combin. Theory, Ser. A"},{"key":"10.1016\/0195-6698(95)90092-6_BIB17","series-title":"Finite Generalized Quadrangles","author":"Payne","year":"1984"},{"key":"10.1016\/0195-6698(95)90092-6_BIB18","doi-asserted-by":"crossref","first-page":"250","DOI":"10.1016\/0097-3165(89)90050-2","article-title":"Nonexistence of ovoids in \u03a9+ (10, 3)","volume":"51","author":"Shult","year":"1989","journal-title":"J. Combin. Theory, Ser. A"},{"key":"10.1016\/0195-6698(95)90092-6_BIB19","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/0097-3165(80)90049-7","article-title":"Polar spaces, generalized hexagons and perfect codes","volume":"29","author":"Thas","year":"1980","journal-title":"J. Combin. Theory, Ser. A"},{"key":"10.1016\/0195-6698(95)90092-6_BIB20","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1007\/BF01447417","article-title":"Ovoids and spreads of finite classical polar spaces","volume":"10","author":"Thas","year":"1981","journal-title":"Geom. Ded."},{"key":"10.1016\/0195-6698(95)90092-6_BIB21","doi-asserted-by":"crossref","first-page":"529","DOI":"10.1016\/S0167-5060(08)70936-1","article-title":"Old and new results on spreads and ovoids of finite classical polar spaces","volume":"52","author":"Thas","year":"1992","journal-title":"Ann. Discr. Math."},{"key":"10.1016\/0195-6698(95)90092-6_BIB22","doi-asserted-by":"crossref","unstructured":"J. A. Thas and S. E. Payne, Spreads and ovoids in finite generalized quadrangles, Geom. Ded., to appear.","DOI":"10.1007\/BF01278475"},{"key":"10.1016\/0195-6698(95)90092-6_BIB23","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1007\/BF01650065","article-title":"Ovo\u00efdes et groupes de Suzuki","volume":"13","author":"Tits","year":"1962","journal-title":"Arch. Math."}],"container-title":["European Journal of Combinatorics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0195669895900926?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0195669895900926?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,2,5]],"date-time":"2019-02-05T00:34:35Z","timestamp":1549326875000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0195669895900926"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1995,1]]},"references-count":23,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1995,1]]}},"alternative-id":["0195669895900926"],"URL":"https:\/\/doi.org\/10.1016\/0195-6698(95)90092-6","relation":{},"ISSN":["0195-6698"],"issn-type":[{"value":"0195-6698","type":"print"}],"subject":[],"published":{"date-parts":[[1995,1]]}}}