Hestenes, Magnus Rudolph,  1906- <br/><br/>
Calculus of variations and optimal control theory 
[by] Magnus R. Hestenes. 
 - New York,  Wiley  [1966] 
 - xii, 405 p.  illus.  24 cm. 
<br/><br/><label>Dewey Class. No.: </label>515 H469