Co-usage of papers

Number of sessions analized: 69179 (we exclude session that access less than 2 papers or articles)

sprjopoecv:13:y:2000:i:1:p:159-162 (4 access) related documents:

ucpjpolecv:99:y:1991:i:1:p:78-99 access 2 commun 2 relatness 0.5

Done at: 2002-04-15 10:19:14