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Translated from Matematicheskie Zametki, Vol. 31, No. 5, pp. 801–812, May, 1982.
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Dmitrienko, V.T., Zvyagin, V.G. Homotopy classification of a class of continuous mappings. Mathematical Notes of the Academy of Sciences of the USSR 31, 404–410 (1982). https://doi.org/10.1007/BF01145721
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DOI: https://doi.org/10.1007/BF01145721