Kantorovitz, Shmuel <br/><br/>
Semigroups of operators and spectral theory   

 - Essex  Longman  1995 
 - 135p. Bibl. 
 - Pitman research notes in Mathematics series   v. 330 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>515.72  / K16.SO