On differentiability of open mappings
The well-known Men’shov and Gehring-Lehto theorems on the differentiability of topological mappings of plane domains are generalized to the case of continuous open mappings of many-dimensional domains.
English version (Springer): Ukrainian Mathematical Journal 50 (1998), no. 12, pp 1811-1826.
Citation Example: Bondar A. V. On differentiability of open mappings // Ukr. Mat. Zh. - 1998. - 50, № 12. - pp. 1587–1600.