Literature Cited
M. Yu. Vasil'chik, “On a lower estimate for the distortion coefficient for infinitesimally close domains,” Sib. Mat. Zh.,19, No. 3, 547–554 (1978).
Yu. G. Reshetnyak, “Estimates for some differential operators with finite-dimensional kernel,” Sib. Mat. Zh.,11, No. 2, 414–428 (1970).
Additional information
Novosibirsk Electrotechnical Institute, Novosibirsk. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 20, No. 5, pp. 964–977, September–October, 1979.
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Vasil'chik, M.Y. Estimates of the order of closeness to unity of the distortion coefficient of domains infinitesimally close to the unit ball. Sib Math J 20, 681–690 (1979). https://doi.org/10.1007/BF00971830
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DOI: https://doi.org/10.1007/BF00971830