Cordes, H. O.  <br/><br/>
Elliptic pseudo-differential operators :  an abstrac theory / 
H. O. Cordes. 
 - Berlin :   Springer-Verlag,   ©1979. 
 - 331 p. 
 - Lecture notes in mathematics ;  no. 756 .
<br/><br/><label>ISBN: </label>038709704X  9780387097046 
<br/><br/><label>Subjects--Index Terms: </label>მათემატიკა ალგებრა 
<br/><br/><label>Universal Decimal Class. No.: </label>512