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@article{IVM_1993_3_a5, author = {S. S. Magazov}, title = {On elementary equivalence for fragments of the language $L_{\omega_1,\omega}$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {51--58}, publisher = {mathdoc}, number = {3}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1993_3_a5/} }
S. S. Magazov. On elementary equivalence for fragments of the language $L_{\omega_1,\omega}$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1993), pp. 51-58. http://geodesic.mathdoc.fr/item/IVM_1993_3_a5/