@article{MZM_1975_18_3_a11,
     author = {A. I. Kashu},
     title = {Bicommutators and quotient rings},
     journal = {Matemati\v{c}eskie zametki},
     pages = {429--435},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_3_a11/}
}