%0 Journal Article %1 kautz1997referral %A Kautz, Henry %A Selman, Bart %A Shah, Mehul %C New York, NY, USA %D 1997 %I ACM %J Communications of the ACM %K collaborative filtering hybrid network recommender social stair %N 3 %P 63--65 %T Referral Web: combining social networks and collaborative filtering %U http://doi.acm.org/10.1145/245108.245123 %V 40