title = {GroupLens: {A}pplying Collaborative Filtering to Usenet News},
author = {J. Konstan and B. Miller and D. Maltz and J. Herlocker and L. Gordon and J. Reidl}, journal = {Communications of ACM }, month = {March}, number = {3}, pages = {77--87}, volume = {40}, year = {1997},
keywords = {imported }
::