Lagrange multiplier approach to variational problems and applications  
Ito, Kazufumi. 
 - Philadelphia, PA :  Society for Industrial and Applied Mathematics,  2008 
 - xvii, 341 p. ;  26 cm. 
<br/><br/><label>ISBN: </label>9780898716498 (pbk. : alk. paper) | 0898716497 (pbk. : alk. paper)