Gelfand, I. M. <br/><br/>
Calculus of variations / 
I.M. Gelfand. 
 - New York :  Dover,  ©1963. 
 - vii, 232 p. 
<br/><br/><label>ISBN: </label>9780486322582 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations
<br/><br/><label>Dewey Class. No.: </label>515.64  / GelC