@article{AL_1974_13_2_a6,
     author = {S. V. Pchelintsev},
     title = {Nilpotency of the associators in a free $(-1,\,1)$-ring},
     journal = {Algebra i logika},
     pages = {217--223},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1974_13_2_a6/}
}