%0 Journal Article %A J.C. Lennox %A D. Segal %A S. Stonehewer %T The Lower Central Series of a Join of Subnormal Subgroups. %J Mathematische Zeitschrift %D 1977 %P 85-90 %V 154 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1977__154_172511/ %F MZ_1977__154_172511