Wendland, W.L. <br/><br/>
Elliptic systems in the plane 

 - London  Pitman Publications  1979 
 - 404p. 
<br/><br/><label>ISBN: </label> 250 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.353 WEN W