Elsgolc, Lev D.  <br/><br/>
Calculus of variations 
Lev D. Elsgolc 
 - New York   Dover Publications, Inc.  2007 
 - 178p. 
<br/><br/><label>ISBN: </label>9780486457994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations<br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.64 El76c