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Translated from Matematicheskie Zametki, Vol. 48, No. 4, pp. 122–131, October, 1990.
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Tsar'kov, I.G. Properties of the sets that have a continuous selection from the operator Pδ . Mathematical Notes of the Academy of Sciences of the USSR 48, 1052–1058 (1990). https://doi.org/10.1007/BF01139608
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DOI: https://doi.org/10.1007/BF01139608