Polya, G <br/><br/>
Problems and theorems in analysis / 
G Polya and  G Szego 
 - Heidelberg:  Springer  1976. 
 - 391p. 
<br/><br/><label>ISBN: </label>3540069720 
<br/><br/><label>Universal Decimal Class. No.: </label>517.53  / POL