@article{AL_1979_18_3_a0,
     author = {V. I. Epanchintsev and G. P. Kukin},
     title = {The word problem in a variety of groups that contain $\mathfrak{N}_{2}\mathfrak{A}$},
     journal = {Algebra i logika},
     pages = {259--285},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1979_18_3_a0/}
}