Hackbusch, Wolfgang <br/><br/>
Elliptic differential equations; theory and numerical treatment   

 - Berlin  Springer-Verlag  1992 
 - xiv, 311p. Index. Bibl. 
 - Springer series in Computational Mathematics, v.18 .
<br/><br/> "Translated from the German by Regine Fadiman and Patrick D. F. Ion"   
<br/><br/><label>Dewey Class. No.: </label>517  / H118.ED