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Translated from Sibirskii Matematicheskii Zhurnal, Vol. 11, No. 2, pp. 343–357, March–April, 1970.
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Kazaryan, G.G. Bounds for derivatives by means of differential operators. Sib Math J 11, 259–270 (1970). https://doi.org/10.1007/BF00967300
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DOI: https://doi.org/10.1007/BF00967300