Smith, Donald R <br/><br/>
Variational methods in optimization   
by Donald R Smith 
 - Mineola  Dover  1974 
 - xv, 378p 
<br/><br/><label>ISBN: </label>0486404552 
<br/><br/><label>Dewey Class. No.: </label>519.6  / N74;3 (ME)