TY - JOUR AU - Ellis, G. J. TI - Non-abelian exterior products of groups and exact sequences in the homology of groups JO - Glasgow mathematical journal PY - 1987 SP - 13 EP - 19 VL - 29 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006637/ DO - 10.1017/S0017089500006637 ID - 10_1017_S0017089500006637 ER -