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@article{AL_1971_10_3_a2, author = {B. I. Zil'ber}, title = {An example of two elementarily equivalent but not isomorphic}, journal = {Algebra i logika}, pages = {309--315}, publisher = {mathdoc}, volume = {10}, number = {3}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1971_10_3_a2/} }
B. I. Zil'ber. An example of two elementarily equivalent but not isomorphic. Algebra i logika, Tome 10 (1971) no. 3, pp. 309-315. http://geodesic.mathdoc.fr/item/AL_1971_10_3_a2/