Arthurs, A. M. <br/><br/>
Complementary variational principles / 
by A. M. Arthurs 
 - Oxford :  Clarendon Press,  1970 
 - ix, 95 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations<br/>Boundary value problems