LAGARIAS, JEFFREY.C <br/><br/>
ULTIMATE CHALLENGE: 3x+1 PROBLEM 

 - RHODE ISLAND  AMC  2010 
 - xiv+344p.,26x18Cms. 
<br/><br/><label>ISBN: </label>9780821849408 
<br/><br/><label>Dewey Class. No.: </label>515.24 L177