Encyclopedia of Mathematics and its applications <br/><br/>
Abstract regular polytopes  / 

 - Cambridge:  Cambridge University Press,  2002 
 - xiii, 551p. Bibl. Index. 
 - Encyclopedia of Mathematics and its applications   V. 92 .
<br/><br/><label>ISBN: </label>0521814960 
<br/><br/><label>Dewey Class. No.: </label>510.3  / En56.92