Hadley, G and Kemp, M. C. <br/><br/>
Variational methods in economics   

 - Amsterdam  North-Holland  1971 
 - x, 378p. 
<br/><br/>  
<br/><br/><label>ISBN: </label>072043601X 
<br/><br/><label>Dewey Class. No.: </label>330.0151564  / H131.VM