Buttazzo, Giudrppe <br/><br/>
One - dimensional variational problems: an introduction 

 - 1st 
 - New York  Oxford Press  1998 
 - viii,262p p. 
<br/><br/><label>ISBN: </label>0-19-850465-9 
<br/><br/><label>Subjects--Index Terms: </label>Calculus of variations