Barros-Neto J. <br/><br/>
Hypoelliptic boundary-value problems 
Barros-Neto J., Artino R.A. 
 - New York-Basel  Marcel Dekker Inc.  1980 
 - 90 p. 
<br/><br/> Lecture Notes in Pure and Applied Maths. V.53 
<br/><br/><label>Dewey Class. No.: </label>517.95