%0 Journal Article %A W. Plesken %A O. Heidbüchel %T The Graph of a~Geometric Class of Space Groups %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2002 %P 284-288 %V 239 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2002_239_a18/ %G en %F TM_2002_239_a18