Büttcher, Stefan <br/><br/>
Information retrieval :  implementing and evaluating search engines / 
Stefan Büttcher, Charles L.A. Clarke, Gordon V. Cormack 
 - Cambridge, Mass. :  MIT Press,  2010 
 - xxiv, 606 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780262026512 0262026511 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Search engines--Programming<br/>Information retrieval