Hermann, Robert. <br/><br/>
Differential geometry and the calculus of variations 

 - New York  Academic Press  1968 
 - x, 440 p. 
 - Mathematics in science and engineering;v.49 .
<br/><br/> Includes bibliography 
<br/><br/><label>Subjects--Personal Names: </label><br/>Differential geometry<br/>Calculus of variations
<br/><br/><label>Dewey Class. No.: </label>516.36  / HER