%0 Journal Article %A A. S. Markovichev %T Lower nil-radical of rings of type $(\gamma ,\,\delta )$ %J Algebra i logika %D 1978 %P 287-302 %V 17 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1978_17_3_a5/ %G ru %F AL_1978_17_3_a5