%0 Journal Article %A N. S. Romanovskii %T Maximal subrings of the field $Q$ and maximal subgroups of the %J Algebra i logika %D 1967 %P 75-82 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1967_6_4_a8/ %G ru %F AL_1967_6_4_a8