Vaclav Petricek Ingemar J. Cox Hui Han Isaac G. Councill C. Lee Giles Modeling the author bias between two on-line computer science citation databases. 1062-1063 2005 conf/www/2005si WWW (Special interest tracks and posters) http://doi.acm.org/10.1145/1062745.1062869 db/conf/www/www2005si.html#PetricekCHCG05