Callan, Jamie <br/><br/>
ACM SIGACT: information retrieval 

 - Vol, 41 Issue No. 1 & 2 
 -  ACM(Association Computing Machinery)  2007 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information Retrival
<br/><br/><label>Dewey Class. No.: </label>005.74 ACM