%0 Journal Article %A Maxwell, George %T The Space Groups of Two Dimensional Minkowski Space %J Canadian journal of mathematics %D 1978 %P 1103-1120 %V 30 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-093-2/ %R 10.4153/CJM-1978-093-2 %F 10_4153_CJM_1978_093_2