GUSTAFSON, Karl E. <br/><br/>
Introduction to partial diffential equations and hilbert space methods 

 - New York  John Wiley & Sons  1980 
 - xv, 270p. 
<br/><br/><label>ISBN: </label>0 471 04089 4 
<br/><br/><label>Dewey Class. No.: </label>515.353