Kristaly, Alexandru <br/><br/>
Variational principles in mathematical physics, geometry and economics  qualitative analysis of nonlinear equations and unilateral problems 
Alexandru Kristaly, Vicentiu D.  Radulescu and Csaba Gyorgy Varga 
 - New York  Cambridge University press  2010 
 - xv, 368p. 
 - (Encyclopedia of mathematics and its applications; 136) .
<br/><br/><label>ISBN: </label>9780521117821 
<br/><br/><label>Subjects--Index Terms: </label>Calculus of variations 
<br/><br/><label>Universal Decimal Class. No.: </label>517.97  / KRI