Hormander, Lars <br/><br/>
Linear partial differential operators 

 - New York  Springer-Verlag  1976 
 - vii, 286p., 22 cm.  hb 
 - Die grundlehren der mayhematischen wissenschaften .
<br/><br/><label>ISBN: </label>0387045007 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Differential operators
<br/><br/><label>Dewey Class. No.: </label>515.7242  / HOR