%0 Journal Article
%A Lam, Tsit-Yuen
%T A Commutator Formula for a Pair of Subgroups and A Theorem of Blackburn
%J Canadian mathematical bulletin
%D 1969
%P 217-219
%V 12
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-025-5/
%R 10.4153/CMB-1969-025-5
%F 10_4153_CMB_1969_025_5