%0 Journal Article %A A.M. Shelekhov %T New closure conditions and some problems in loop theory. %J Aequationes mathematicae %D 1991 %P 79-84 %V 41 %N 2-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1991__41_2-3_137393/ %F AM2_1991__41_2-3_137393