Yosida, Kosaku. <br/><br/>
Funtional analysis   
by Kosaku Yosida 
 - 2nd 
 - Berlin  Springer-Verlag  1968 
 - xi, 465p. 
 - Die Grundlehren der mathematischen Wissenschaften  Band 123 .
<br/><br/><label>LCCN: </label>64-8025 
<br/><br/><label>Dewey Class. No.: </label>515.7  / N681