@article{AL_1986_25_5_a1,
     author = {M. I. Golovanov},
     title = {On the degree of nilpotency of $4${-Engel} {Lie} rings},
     journal = {Algebra i logika},
     pages = {508--532},
     publisher = {mathdoc},
     volume = {25},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1986_25_5_a1/}
}