Sharma, R. K. <br/><br/>
Calculus of Variations 
/ by R. K. Sharma 
 - New Delhi  Medtech  2017 
 - ix,271p. 
<br/><br/><label>ISBN: </label>9789385998379 
<br/><br/><label>Dewey Class. No.: </label>515  / SHA/C