Lyusternik, L. A. <br/><br/>
Shorter paths variational problems 
L. A. Lyusternik 
 - Oxford  Pergamon Press  1964 
 - x,102p.  23cm. 
 - Popular Lectures in Mathematics; 13 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Variational inequalities (mathematics)
<br/><br/><label>LC Class. No.: </label>MATH QA315.L98