TY - JOUR AU - Maxwell, George TI - The Space Groups of Two Dimensional Minkowski Space JO - Canadian journal of mathematics PY - 1978 SP - 1103 EP - 1120 VL - 30 IS - 5 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-093-2/ DO - 10.4153/CJM-1978-093-2 ID - 10_4153_CJM_1978_093_2 ER -