Grigis, Alain <br/><br/>
Microlocal analysis for differential operators; an introduction  / 

 - Cambridge:  Cambridge University Press,  1994 
 - 151p. Index, Bibl. 
 - London Mathematical Society lecture note series   v. 196 .
<br/><br/><label>Dewey Class. No.: </label>515.35  / G857.MA