Gardner, Martin, <br/><br/>
Sphere Packing, Lewis Carroll, and Reversi : 

 -  Cambridge University Press,  2009. 
<br/><br/><label>ISBN: </label>9780521747011 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>793.74  / GAR