Pilar Sabariego Francisco Santos On the Number of Facets of Three-Dimensional Dirichlet Stereohedra III: Full Cubic Groups. 159-189 2008 40 Discrete & Computational Geometry 2 http://dx.doi.org/10.1007/s00454-008-9063-0 db/journals/dcg/dcg40.html#SabariegoS08