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This research was supported in part by grants from the U.S. National Science Foundation, the Institut Mittag-Leffler and the Alfred P. Sloan Foundation.
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Yang, S. Extremal distance and quasiconformal reflection constants of domains in ℝN . J. Anal. Math. 62, 1–28 (1994). https://doi.org/10.1007/BF02835946
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DOI: https://doi.org/10.1007/BF02835946