%0 Journal Article
%A Luedeman, John K.
%T A Note on the Σ(S)-Injectivity of R(S)
%J Canadian mathematical bulletin
%D 1970
%P 481-489
%V 13
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-088-0/
%R 10.4153/CMB-1970-088-0
%F 10_4153_CMB_1970_088_0