Hiai, Fumio and Kosaki, Hideki <br/><br/>
Means of hilbert space operators   

 - Berlin  Springer-Verlag 
 - 134p. Bibl. Index. 
 - Lecture notes in mathematics   1820 .
<br/><br/> Duplicate phtocopy   
<br/><br/><label>Dewey Class. No.: </label>515.72  / H623.MH