Sagan, Hans. <br/><br/>
Introduction to the calculus of variations.   

 - New York:   McGraw-Hill ,   1969. 
 - xvi, 449 p. :    illus. ;    24 cm. 
 - International series in pure and applied mathematics.   .
<br/><br/>Includes bibliography. P. 434-437. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.--------
<br/><br/><label>Dewey Class. No.: </label>515.64 SAG