Khinchin, A. Y. <br/><br/>
Three pearls of number theory   
by A. Y. Khinchin 
 - New York  Dover Publications Inc.  1998 
 - 64p. 
 - Dover books on mathematics .
<br/><br/><label>ISBN: </label>0486400263 
<br/><br/><label>Dewey Class. No.: </label>512.7  / N98