Wen, G.C <br/><br/>
Elliptic, hyperbolic & mixed complex equations with parabolic degeneracy  including Tricomi-Bers & Tricomi-Frankl-rassia 
G.C. Wen 
 - Singapore  World Scientific  2008 
 - xiii  439 
 - Peking university series in mathematics 4 .
<br/><br/><label>ISBN: </label>9789812779427 
<br/><br/><label>Dewey Class. No.: </label>10.03+10.05  / WEN