Arthurs, A. M. <br/><br/>
Complementary variational principles / 
by A.M. Arthurs 
 - 2nd ed. 
 - Oxford :  Clarendon Press,  1980 
 - 154 p. ;  25 cm. 
 - Oxford mathematical monograhs .
<br/><br/> Previous ed.: 1970 
<br/><br/><label>ISBN: </label>0198535325 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations