TY - JOUR AU - Atkinson, M. D. TI - On Rank 3 Groups Having λ = 0 JO - Canadian journal of mathematics PY - 1977 SP - 845 EP - 847 VL - 29 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-086-2/ DO - 10.4153/CJM-1977-086-2 ID - 10_4153_CJM_1977_086_2 ER -