Gilbert Robert P <br/><br/>
First order elliptic systems: A function theoretic approach 
Gilbert Robert P; Buchanan James L 
 - New York       Academic Press         1983 
 - xi, 281p.  cm. 
 - Mathematics in science and engineering; 163 .
<br/><br/><label>Standard No.: </label>22821 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B334, M3