Conway, J. H. <br/><br/>
Sphere packings, lattices and groups  / 

 - 2nd. 
 - New York:  Springer-Verlag,  1993 
 - xliii, 679p. Index, Bibl. 
 - Die Grendlehren der Mathematischen Wissenschaften ; v.290 .
<br/><br/><label>Dewey Class. No.: </label>512.7  / C767.SP