Kevorkian,J <br/><br/>
Partial Differential Equations  analytical soluton techniqes 
J Kevorkian 
 - 2nd ed. 
 - NewYork  Springer  0000 
 - xi,636p. 
 - (Text in applied mathematics  35) .
<br/><br/><label>ISBN: </label>0387 98605  E64.95