Graffi, D <br/><br/>
Nonlinear partial differential equations in physical problems 
D. Graffi 
 - San Francisco  Pitman Advanced Publishing Program  1980 
 - 105 
 - Research notes in mathematics 42 .
<br/><br/><label>ISBN: </label>0273084747 
<br/><br/><label>Dewey Class. No.: </label>6.06  / GRAF