%0 Journal Article %A Billis, M. J. %T Finite Groups whose Powers have no Countably Infinite Factor Groups %J Canadian journal of mathematics %D 1969 %P 965-969 %V 21 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-105-1/ %R 10.4153/CJM-1969-105-1 %F 10_4153_CJM_1969_105_1