Yosida, Kosaku. <br/><br/>
Functional analysis 
by Kosaku Yosida 
 - New Delhi  Narosa Publishing House  1974 
 - xi, 496p. 
 - Die Grundlehren der mathematischen Wissenschaften  Band 123 .
<br/><br/><label>ISBN: </label>3540068120 
<br/><br/><label>Dewey Class. No.: </label>515.7  / N74;6