@article{MZM_1987_42_5_a1,
     author = {V. M. Levchuk},
     title = {Some locally nilpotent rings and their adjoined groups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {631--641},
     publisher = {mathdoc},
     volume = {42},
     number = {5},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1987_42_5_a1/}
}