%0 Journal Article %A Dobbs, David E. %T Lying-Over Pairs of Commutative Rings %J Canadian journal of mathematics %D 1981 %P 454-475 %V 33 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-040-5/ %R 10.4153/CJM-1981-040-5 %F 10_4153_CJM_1981_040_5