Collatz, L & Wetterling, W <br/><br/>
Optimization problems 
L. Collatz & W. Wetterling 
 - Berlin  Springer  1975 
 - x  356 
 - Applied mathematical sciences 17 .
<br/><br/><label>ISBN: </label>3540901434 
<br/><br/><label>Dewey Class. No.: </label>15.01  / COLL