Garding Lars <br/><br/>
Singularities in linear wave propagation 
Garding Lars 
 - Berlin  Springer-Verlag           1987 
 - 123p.  cm. 
 - Lecture notes in mathematics; 1241 .
<br/><br/><label>Standard No.: </label>24314 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B33, M7