Liusternik <br/><br/>
Topology of the calculus of variations in the large 

 - Providence  American Mathematical Society         1966 
 - vii,96p.  cm. 
 - Translations of mathematical monographs; 16 .
<br/><br/><label>Standard No.: </label>29684 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B42, K6-;1