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

 - 3rd ed 
 - Mineola.   : Inc Dover publications,  1999. 
 - xv,448p.   : ill.    ; 22cm. 
<br/><br/>Includes bibliographical references and index<br/> 
<br/><br/><label>ISBN: </label>0-486-61271-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equation<br/> partial<br/>Hilbert space
<br/><br/><label>LC Class. No.: </label>QA374.G97