{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T11:49:03Z","timestamp":1774007343838,"version":"3.50.1"},"reference-count":19,"publisher":"Informa UK Limited","issue":"3-4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Linear and Multilinear Algebra"],"published-print":{"date-parts":[[2004,5]]},"DOI":"10.1080\/0308108031000134981","type":"journal-article","created":{"date-parts":[[2004,5,1]],"date-time":"2004-05-01T22:55:01Z","timestamp":1083452101000},"page":"203-233","source":"Crossref","is-referenced-by-count":20,"title":["On Generalized Numerical Ranges of Operators on an Indefinite Inner Product Space"],"prefix":"10.1080","volume":"52","author":[{"given":"N.","family":"Bebiano","sequence":"first","affiliation":[]},{"given":"R.","family":"Lemos","sequence":"additional","affiliation":[]},{"given":"J.","family":"da Provid\u00eancia","sequence":"additional","affiliation":[]},{"given":"G.","family":"Soares","sequence":"additional","affiliation":[]}],"member":"301","reference":[{"key":"bib1","doi-asserted-by":"publisher","DOI":"10.1080\/03081088608817719"},{"key":"bib2","doi-asserted-by":"publisher","DOI":"10.1016\/0024-3795(86)90248-X"},{"key":"bib3","doi-asserted-by":"publisher","DOI":"10.1307\/mmj\/1028997958"},{"key":"bib4","volume-title":"Universidade de Coimbra","author":"Duarte AL","year":"1993"},{"key":"bib5","doi-asserted-by":"publisher","DOI":"10.1016\/0024-3795(77)90075-1"},{"key":"bib6","doi-asserted-by":"publisher","DOI":"10.1016\/0024-3795(93)00258-2"},{"key":"bib7","doi-asserted-by":"crossref","DOI":"10.1017\/CBO9780511810817","volume-title":"Matrix Analysis, Cambridge University Press","author":"Horn RA","year":"1985"},{"key":"bib8","doi-asserted-by":"crossref","DOI":"10.1017\/CBO9780511840371","volume-title":"Topics in Matrix Analysis, Cambridge University Press","author":"Horn RA","year":"1991"},{"key":"bib9","volume-title":"Basic Algebra","author":"Jacobson N","year":"1985"},{"key":"bib10","doi-asserted-by":"publisher","DOI":"10.1137\/0715039"},{"key":"bib11","doi-asserted-by":"publisher","DOI":"10.1002\/mana.19510060306"},{"key":"bib12","first-page":"1","volume":"1","author":"Li C-K","year":"1996","journal-title":"Electr. J. Linear Algebra"},{"key":"bib13","first-page":"31","volume":"3","author":"Li C-K","year":"1998","journal-title":"Electr. J. Linear Algebra"},{"key":"bib14","doi-asserted-by":"publisher","DOI":"10.1090\/S0002-9939-98-04242-7"},{"key":"bib15","doi-asserted-by":"publisher","DOI":"10.1080\/03081088708817748"},{"key":"bib16","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.18.3.246"},{"key":"bib17","doi-asserted-by":"publisher","DOI":"10.1080\/03081089508818395"},{"key":"bib18","doi-asserted-by":"publisher","DOI":"10.1016\/0024-3795(82)90254-3"},{"key":"bib19","doi-asserted-by":"publisher","DOI":"10.1016\/0024-3795(82)90212-9"}],"container-title":["Linear and Multilinear Algebra"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.tandfonline.com\/doi\/pdf\/10.1080\/0308108031000134981","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2018,5,12]],"date-time":"2018-05-12T11:09:41Z","timestamp":1526123381000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/0308108031000134981"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,5]]},"references-count":19,"journal-issue":{"issue":"3-4","published-print":{"date-parts":[[2004,5]]}},"alternative-id":["10.1080\/0308108031000134981"],"URL":"https:\/\/doi.org\/10.1080\/0308108031000134981","relation":{},"ISSN":["0308-1087","1563-5139"],"issn-type":[{"value":"0308-1087","type":"print"},{"value":"1563-5139","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,5]]}}}