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Additional information
Institute of Mathematics, Academy of Sciences of the Armenian SSR, Erevan. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 22, No. 2, pp. 170–190, March–April, 1981.
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Ovsepyan, S.G. Pseudotopological spaces and their extensions. Sib Math J 22, 300–315 (1981). https://doi.org/10.1007/BF00968426
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DOI: https://doi.org/10.1007/BF00968426