%0 Journal Article
%A Gilmer, Robert
%A Heinzer, William
%T On the Cardinality of Subrings of a Commutative Ring
%J Canadian mathematical bulletin
%D 1986
%P 102-108
%V 29
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-019-0/
%R 10.4153/CMB-1986-019-0
%F 10_4153_CMB_1986_019_0