@article{Avancini07, 
 Author = {Henri Avancini and Leonardo Candela and Umberto Straccia}, 
 Journal = {Journal of Intelligent Information Systems}, 
 Number = {3},
 Volume = {28},
 Pages = {253-283}, 
 Publisher = {Springer Verlag}, 
 Title = {Recommenders in a Personalized, Collaborative Digital Library Environment},
 Volume = {27},
 Year = {2007}}