{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,7]],"date-time":"2025-08-07T20:48:12Z","timestamp":1754599692388},"reference-count":8,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[1997,5,1]],"date-time":"1997-05-01T00:00:00Z","timestamp":862444800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Scientometrics"],"published-print":{"date-parts":[[1997,5]]},"DOI":"10.1007\/bf02457435","type":"journal-article","created":{"date-parts":[[2006,7,8]],"date-time":"2006-07-08T05:48:42Z","timestamp":1152337722000},"page":"141-141","source":"Crossref","is-referenced-by-count":4,"title":["Patent citation analysis"],"prefix":"10.1007","volume":"39","author":[{"given":"C.","family":"Oppenheim","sequence":"first","affiliation":[]}],"member":"297","reference":[{"key":"BF02457435_CR1","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1177\/016555159602200604","volume":"22","author":"M. Lawson","year":"1996","unstructured":"M. Lawson, N. Kemp, M. F. Lynch, G. G. Chowdhury, Automatic extraction of citations from the text of English-language patents\u2014an example of tenplate mining,Journal of Information Science, 22 (1996) 423\u2013436.","journal-title":"Journal of Information Science"},{"key":"BF02457435_CR2","first-page":"700","volume":"41","author":"F. Narin","year":"1993","unstructured":"F. Narin, D. Olivastro, Patent citation cycles,Library Trends, 41 (1993) 700\u2013709.","journal-title":"Library Trends"},{"key":"BF02457435_CR3","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1007\/BF02017219","volume":"30","author":"F. Narin","year":"1994","unstructured":"F. Narin, Patent bibliometrics,Scientometrics, 30 (1994) 147\u2013155.","journal-title":"Scientometrics"},{"key":"BF02457435_CR4","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1007\/BF02017229","volume":"30","author":"P. Vinkler","year":"1994","unstructured":"P. Vinkler, The origin and features of inrormation referenced in pharmaceutical patents,Scientometrics, 30 (1994) 283\u2013302.","journal-title":"Scientometrics"},{"key":"BF02457435_CR5","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1108\/eb026650","volume":"34","author":"P. Ellis","year":"1978","unstructured":"P. Ellis et al., Studies on patent citation networks,Journal of Documentation, 34 (1978) 12\u201320.","journal-title":"Journal of Documentation"},{"key":"BF02457435_CR6","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/0172-2190(80)90071-X","volume":"2","author":"H. M. Nunn","year":"1980","unstructured":"H. M. Nunn, C. Oppenheim, A patent-journal citation network on prostaglandins,World Patent Information, 2 (1980) 57\u201360.","journal-title":"World Patent Information"},{"key":"BF02457435_CR7","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/0172-2190(80)90052-6","volume":"2","author":"L. Dunlop","year":"1980","unstructured":"L. Dunlop, C. Oppenheim, Effect of recycling on a patent citation network,World Patent Information, 2 (1980) 100\u2013102.","journal-title":"World Patent Information"},{"key":"BF02457435_CR8","unstructured":"C. Oppenheim, Studies on patent citation networks, BLR&DD Report 5517 (1979)."}],"container-title":["Scientometrics"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/BF02457435.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/BF02457435\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/BF02457435","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,17]],"date-time":"2019-05-17T19:48:28Z","timestamp":1558122508000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/BF02457435"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1997,5]]},"references-count":8,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1997,5]]}},"alternative-id":["BF02457435"],"URL":"https:\/\/doi.org\/10.1007\/bf02457435","relation":{},"ISSN":["0138-9130","1588-2861"],"issn-type":[{"value":"0138-9130","type":"print"},{"value":"1588-2861","type":"electronic"}],"subject":[],"published":{"date-parts":[[1997,5]]}}}