Fujishige, Satoru <br/><br/>
Submodular functions and optimization 

 - 2nd ed. 
 - New York  Elsevier  2005 
 - xiv,395p.  HB  22cm. 
<br/><br/> includes references and index 
<br/><br/><label>ISBN: </label>9780444520869 
<br/><br/><label>Dewey Class. No.: </label>511.6  / FUJ