Colojoara, I & Foias, C <br/><br/>
Theory of generalized spectral operators 
I. Colojoara & C. Foias 
 - New York  Gordon & Breach  1968 
 - xv  232 
 - Mathematics & its applications 9 .
<br/><br/><label>Dewey Class. No.: </label>5.03  / COLO