Recommender systems :  an introduction / 
Dietmar Jannach ... [et al.] 
 - New York :  Cambridge University Press,  2011 
 - 335 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780521493369 0521493366 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Personal communication service systems<br/>Recommender systems (Information filtering)