Banach algebras techniques in operator theory/ 
Douglas, Ronald G. 
 - 2nd, ed. 
 - New York:  Springer,  1998. 
 - 194 p. 
<br/><br/><label>ISBN: </label>9780387983776 
<br/><br/><label>Dewey Class. No.: </label>515.724  / DOU/B