Partial Differential Equations VI  Elliptic and Parabolic Operators 
ed by Yu V Egorov and M A Shubin 
 - Berlin  Springer  1994 
 - 325p 
 - Encyclopaedia of Mathematical Sciences - Vol. 63 .
<br/><br/><label>ISBN: </label>0387546782 
<br/><br/><label>Dewey Class. No.: </label>515.353  / N94.6 (MA)