Vekua, I. N. <br/><br/>
Generalized Analytic Functions 
/ by  I. N. Vekua 
 - New York:  Pergamon Press;  1962. 
 - 668p. 
<br/><br/><label>ISBN: </label>000 
<br/><br/><label>Dewey Class. No.: </label>515  / VEK/G