Encyclopaedia of Mathematical Sciences <br/><br/>
Partial differential equations; No.7 - Spectral theory of differential operators   
Ed. by M. A. Shubin 
 - Berlin  Springer-Verlag  1994 
 - 272p. Index. 
 - Encyclopaedia of Mathematical Sciences   V. 64 .
<br/><br/> "Purchased under NBHM grant for the year 1994-1995"   
<br/><br/><label>Dewey Class. No.: </label>510.3  / En56.64