%0 Journal Article %A A. Levichev %A V. Levicheva %T Distinguishability Conditions and the Future Semigroup %J Journal of Lie Theory %D 1992 %P 205-212 %V 2 %N 2 %U http://geodesic.mathdoc.fr/item/JOLT_1992_2_2_a8/ %F JOLT_1992_2_2_a8