Istra tescu, Vasile I. <br/><br/>
Introduction to linear operator theory / 
Vasile I. Istr a tescu. 
 - New York :  M. Dekker,  1981. 
 - xi, 579 p. ;  24 cm. 
 - Pure and applied mathematics  65. .
<br/><br/>Includes indexes. Bibliography: p. 553-572 
<br/><br/><label>ISBN: </label>0824768965 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linear operators.<br/>Hilbert space.<br/>Banach spaces.