Schechter, Martin. <br/><br/>
Modern methods in partial differential equations  an introduction 
by Martin Schechter 
 - New York  McGraw Hill  1977 
 - xii, 245p. 
<br/><br/><label>ISBN: </label>0070551936 
<br/><br/><label>Dewey Class. No.: </label>513.353  / N772