One-sided zeros of subsets of the semigroup of binary relations
English version (Springer): Ukrainian Mathematical Journal 42 (1990), no. 5, pp 532-535.
Citation Example: Diasamidze Ya. I. One-sided zeros of subsets of the semigroup of binary relations // Ukr. Mat. Zh. - 1990. - 42, № 5. - pp. 600–604.
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