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@article{AL_1973_12_2_a2, author = {G. V. Dorofeev}, title = {An example of a solvable but not nilpotent $(-1,1)$-ring}, journal = {Algebra i logika}, pages = {162--166}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1973_12_2_a2/} }
G. V. Dorofeev. An example of a solvable but not nilpotent $(-1,1)$-ring. Algebra i logika, Tome 12 (1973) no. 2, pp. 162-166. http://geodesic.mathdoc.fr/item/AL_1973_12_2_a2/