Gelfand I. M. <br/><br/>
Calculus of variations 

 - New Jersey   Prentice- Hall Inc.         1963 
 - vii, 232 p.  Includes bibliographical reference and index 
<br/><br/><label>Source: </label> Reference  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations <br/>Mathematics