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Table 1. 
Summary of analyzed data. Publications of type “article” that had at least five cited references indexed in Scopus were selected from the 11 years 1985–1995. All possible reference pairs were generated for the cited references of these articles and then restricted to those pairs where both members were in the set of 768,993 highly cited publications. The fourth column shows the number of pairs in each year after the restriction was applied
YearArticlesReferencesCocited pairs
1985 223,485 1,796,502 2,600,101 
1986 238,096 1,920,225 2,840,557 
1987 250,575 2,037,654 3,180,261 
1988 269,219 2,182,571 3,406,902 
1989 285,873 2,303,481 3,793,986 
1990 305,010 2,490,909 4,546,915 
1991 325,782 2,662,005 5,039,334 
1992 343,239 2,846,607 5,622,164 
1993 360,916 3,006,374 6,121,147 
1994 387,062 3,228,240 7,022,499 
1995 405,503 3,432,228 7,626,684 
YearArticlesReferencesCocited pairs
1985 223,485 1,796,502 2,600,101 
1986 238,096 1,920,225 2,840,557 
1987 250,575 2,037,654 3,180,261 
1988 269,219 2,182,571 3,406,902 
1989 285,873 2,303,481 3,793,986 
1990 305,010 2,490,909 4,546,915 
1991 325,782 2,662,005 5,039,334 
1992 343,239 2,846,607 5,622,164 
1993 360,916 3,006,374 6,121,147 
1994 387,062 3,228,240 7,022,499 
1995 405,503 3,432,228 7,626,684 
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