Samoilenko, Y. S. <br/><br/>
Spectral theory of families of self-adjoint operators  / 

 - Dordrecht:  Academic Press,  1991 
 - xvi, 393p. Index, Bibl. 
 - Mathematics and its applications (Soviet series) .
<br/><br/><label>Dewey Class. No.: </label>515.72  / Sa191.ST