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

 - 3rd Rev. 
 - Berlin  Springer-Verlag  1969 
 - viii, 286p. 
 - Die Grundlehren der Mathematischen Wissenschaften   116 .
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<br/><br/><label>Dewey Class. No.: </label>515.35  / H812.LP