Hormander, Lavs. <br/><br/>
Linear partial differential operators   
by Lavs Hormander 
 - Berlin  Springer-Verlag  1963 
 - vii, 285p. 
 - Die Grundlehren der Mathematischen Wissenschaften  Band 116 .
<br/><br/><label>ISBN: </label>3540045007 
<br/><br/><label>Dewey Class. No.: </label>515.353  / N63;2