%0 Journal Article %A B. I. Zil'ber %T An example of two elementarily equivalent but not isomorphic %J Algebra i logika %D 1971 %P 309-315 %V 10 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1971_10_3_a2/ %G ru %F AL_1971_10_3_a2