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@article{IM2_1971_5_6_a11, author = {S. A. Ashmanov and M. A. Bronshtein}, title = {Simple polyverbal operations}, journal = {Izvestiya. Mathematics }, pages = {1418--1436}, publisher = {mathdoc}, volume = {5}, number = {6}, year = {1971}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1971_5_6_a11/} }
S. A. Ashmanov; M. A. Bronshtein. Simple polyverbal operations. Izvestiya. Mathematics , Tome 5 (1971) no. 6, pp. 1418-1436. http://geodesic.mathdoc.fr/item/IM2_1971_5_6_a11/