Elsgolc L E <br/><br/>
Calculus of variations 

 -  1961 
 - International Series of Monographs on Pure and Applied Mathematics ed by I N Sneddon etc, 19 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Special Functions
<br/><br/><label>Dewey Class. No.: </label>B42, K1