%0 Journal Article %A G. V. Dorofeev %T An example of a solvable but not nilpotent $(-1,1)$-ring %J Algebra i logika %D 1973 %P 162-166 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1973_12_2_a2/ %G ru %F AL_1973_12_2_a2