Yosida, K. <br/><br/>
Functional analysis.- 5th ed. 
K. Yosida. 
 - Bombay:  Narosa publishing house; 
<br/><br/><label>Subjects--Index Terms: </label>Functional analysis. 
<br/><br/><label>Universal Decimal Class. No.: </label>517.98  / YOS