%0 Journal Article %A Kruse, Robert L. %T Rings in which all Subrings are Ideals. I %J Canadian journal of mathematics %D 1968 %P 862-871 %V 20 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-083-1/ %R 10.4153/CJM-1968-083-1 %F 10_4153_CJM_1968_083_1