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@article{IVM_1983_3_a11, author = {Yu. M. Vazhenin and B. V. Rozenblat}, title = {Positive theories of free algebraic systems}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {70--73}, publisher = {mathdoc}, number = {3}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1983_3_a11/} }
Yu. M. Vazhenin; B. V. Rozenblat. Positive theories of free algebraic systems. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1983), pp. 70-73. http://geodesic.mathdoc.fr/item/IVM_1983_3_a11/