@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/}
}