%0 Journal Article %A M. I. Golovanov %T On the degree of nilpotency of $4$-Engel Lie rings %J Algebra i logika %D 1986 %P 508-532 %V 25 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1986_25_5_a1/ %G ru %F AL_1986_25_5_a1