@article{AL_1985_24_1_a4,
     author = {N. G. Nesterenko},
     title = {Representation of algebras by triangular matrices},
     journal = {Algebra i logika},
     pages = {65--86},
     year = {1985},
     volume = {24},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1985_24_1_a4/}
}