%0 Journal Article %A Frank Conolly %A Tadeusz Kozniewski %T Rigidity and crystallographic groups, I. %J Inventiones mathematicae %D 1990 %P 25-48 %V 99 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1990__99_1_143749/ %F IM_1990__99_1_143749