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Additional information
Vladivostok. Translated fromSibirskiî Matematicheskiî Zhurnal. Vol. 39, No. 5, pp. 1164–1174, September–October, 1998.
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Stepanova, A.A. Model companions of the quasivarieties of polygons. Sib Math J 39, 1007–1016 (1998). https://doi.org/10.1007/BF02672924
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DOI: https://doi.org/10.1007/BF02672924