Schmeidler, Werner <br/><br/>
Linear operators in Hilbert space / 
Werner Schmeidler 
 - New York :  Academic Press,  1965 
 - ix, 122 p. ;  21 cm. 
 - Academic paperbacks. Mathematics. .
<br/><br/>p. 119-120. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hilbert space<br/>Linear operators