Clements, David L. <br/><br/>
Boundary value problems governed by second order elliptic systems   

 - Boston  Pitman  1981 
 - viii, 162p. Index, Bibl. 
 - Monographs and studies in Mathematics   12 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>515.35  / C626.BV