{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,3,31]],"date-time":"2022-03-31T16:22:41Z","timestamp":1648743761253},"reference-count":7,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[1977,5,1]],"date-time":"1977-05-01T00:00:00Z","timestamp":231292800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Automatica"],"published-print":{"date-parts":[[1977,5]]},"DOI":"10.1016\/0005-1098(77)90052-8","type":"journal-article","created":{"date-parts":[[2003,3,14]],"date-time":"2003-03-14T13:27:27Z","timestamp":1047648447000},"page":"255-264","source":"Crossref","is-referenced-by-count":12,"title":["Linear-quadratic discrete-time control and constant directions"],"prefix":"10.1016","volume":"13","author":[{"given":"David J.","family":"Clements","sequence":"first","affiliation":[]},{"given":"Brian D.O.","family":"Anderson","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0005-1098(77)90052-8_BIB1","article-title":"Matrix inequality solution to linear-quadratic singular control problems","volume":"AC-22","author":"Clements","year":"1977","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(77)90052-8_BIB2","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1016\/0005-1098(72)90065-9","article-title":"Constant directions of the Riccati equation","volume":"8","author":"Rappaport","year":"1972","journal-title":"Automatica"},{"key":"10.1016\/0005-1098(77)90052-8_BIB3","doi-asserted-by":"crossref","first-page":"535","DOI":"10.1109\/TAC.1970.1099553","article-title":"Correlated noise filtering and invariant directions of the Riccati equation","volume":"AC-15","author":"Bucy","year":"1970","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(77)90052-8_BIB4","doi-asserted-by":"crossref","first-page":"699","DOI":"10.1016\/0005-1098(73)90029-0","article-title":"Constant, predictable and degenerate directions of the discrete-time Riccati equation","volume":"9","author":"Gevers","year":"1973","journal-title":"Automatica"},{"key":"10.1016\/0005-1098(77)90052-8_BIB5","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1109\/TAC.1973.1100280","article-title":"On the discrete-time algebraic Riccati equation","volume":"AC-18","author":"Payne","year":"1973","journal-title":"IEEE Trans. Aut. Control"},{"key":"10.1016\/0005-1098(77)90052-8_BIB6","first-page":"313","article-title":"Discrete Riccati equations","volume":"Vol. 12","author":"Silverman","year":"1976"},{"key":"10.1016\/0005-1098(77)90052-8_BIB7","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1109\/TAC.1974.1100576","article-title":"Some new algorithms for recursive estimation in constant, linear, discrete-time systems","volume":"AC-19","author":"Morf","year":"1974","journal-title":"IEEE Trans. Aut. Control"}],"container-title":["Automatica"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0005109877900528?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0005109877900528?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,3,26]],"date-time":"2019-03-26T22:23:33Z","timestamp":1553639013000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0005109877900528"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1977,5]]},"references-count":7,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1977,5]]}},"alternative-id":["0005109877900528"],"URL":"https:\/\/doi.org\/10.1016\/0005-1098(77)90052-8","relation":{},"ISSN":["0005-1098"],"issn-type":[{"value":"0005-1098","type":"print"}],"subject":[],"published":{"date-parts":[[1977,5]]}}}