Pickover, Clifford A <br/><br/>
Mathematics of OZ : mental gymnastics from beyond the edge 

 - Cambridge  Cambridge University Press  2002 
 - xvi, 351p.  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>521016789 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Mathematical games