Cristina N. González-Caro Maritza L. Calderón-Benavides José de Jesús Pérez Alcázar Juan C. García-Díaz Joaquin Delgado Towards a More Comprehensive Comparison of Collaborative Filtering Algorithms. 248-253 http://link.springer.de/link/service/series/0558/bibs/2476/24760248.htm 2002 conf/spire/2002 SPIRE db/conf/spire/spire2002.html#Gonzalez-CaroCAGD02