The technique of pseudo differential operators 
H. O. Codes 
 - 1st ed 
 - New York  [publisher not identified]  1995 
 - x, 382p.; 23 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780521378642 
<br/><br/><label>Dewey Class. No.: </label>515.35 COR