Gurlebeck,Klaus <br/><br/>
Quaternionic Analysis and Elliptic Boundary Value Problems 
/ by Klaus Gurlebeck 
 - Berlin  Birkhauser Verlag  1990 
 - 253p. 
<br/><br/><label>ISBN: </label>3764323825 
<br/><br/><label>Dewey Class. No.: </label>515.3533  / GUR/Q