TY - JOUR AU - Pettet, Martin R. TI - Groups whose automorphisms are almost determined by their restriction to a subgroup JO - Glasgow mathematical journal PY - 1986 SP - 87 EP - 93 VL - 28 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006388/ DO - 10.1017/S0017089500006388 ID - 10_1017_S0017089500006388 ER -