Hestenes, Magnus R. <br/><br/>
Calculus of variations and optimal control theory   
by Magnus R. Hestenes 
 - New York  John Wiley & Sons  1966 
 - xii, 405p. 
 - Applied Mathematics Series .
<br/><br/><label>LCCN: </label>66-21069 
<br/><br/><label>Dewey Class. No.: </label>515.64  / N663;1