@article{AL_1979_18_5_a4,
     author = {V. T. Filippov},
     title = {Nilpotent ideals in {Mal'cev} algebras},
     journal = {Algebra i logika},
     pages = {599--613},
     year = {1979},
     volume = {18},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1979_18_5_a4/}
}