Matthews, Graham. <br/><br/>
Introduction to modern information retrieval / 

 - 3rd ed / 
 - London :  Facet Publishing ,  1999 
<br/><br/><label>ISBN: </label>9781856046947 
<br/><br/><label>Subjects--Index Terms: </label>INFORMATION RETRIEVAL 
<br/><br/><label>Dewey Class. No.: </label>25.04  / CHO/I