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The results show that only 61 percent of the online citations remain accessible in 2004 and 39 percent do not. The content analysis also shows that .org and .gov are the most stable domains. Error messages for `dead' URL addresses are explored. The instability of online citations raises concerns for researchers, editors and associations.<\/jats:p>","DOI":"10.1177\/1461444807081226","type":"journal-article","created":{"date-parts":[[2007,10,16]],"date-time":"2007-10-16T10:18:58Z","timestamp":1192529938000},"page":"811-826","source":"Crossref","is-referenced-by-count":26,"title":["The half-life of internet references cited in communication journals"],"prefix":"10.1177","volume":"9","author":[{"given":"Daniela V.","family":"Dimitrova","sequence":"first","affiliation":[{"name":"Iowa State University, USA,"}]},{"given":"Michael","family":"Bugeja","sequence":"additional","affiliation":[{"name":"Iowa State University, USA,"}]}],"member":"179","published-online":{"date-parts":[[2007,10,1]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.2307\/2657504"},{"issue":"4","key":"atypb2","first-page":"330","volume":"58","author":"Boynton, L.A.","year":"2004","journal-title":"Journalism and Mass Communication Educator"},{"issue":"1","key":"atypb3","first-page":"77","volume":"37","author":"Bugeja, M.","year":"2005","journal-title":"Journal of Communication"},{"key":"atypb4","author":"Carlson, S.","year":"2004","journal-title":"Chronicle of Higher Education"},{"key":"atypb5","doi-asserted-by":"crossref","unstructured":"Casserly, M.F. and J.E. 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