1. A. F. Beardon and D. Minda, “The hyperbolic metric and geometric function theory,” in Quasiconformal Mappings and their Applications, Ed. by S. Ponnusamy, T. Sugawa, and M. Vuorinen (Narosa, New Delhi, 2007), pp. 9–56.
2. J. Becker and C. Pommerenke, “Hölder continuity of conformal maps with quasiconformal extensions,” Complex Var. Theory Appl. 10, 267–272 (1988).
3. C. J. Bishop, V. Ya. Gutlyanskii, O. Martio, and M. Vuorinen, “On conformal dilatation in space,” Int. J. Math. Math. Sci. 22, 1397–1420 (2003).
4. V. I. Burenkov, V. Gol’dshtein, and A. Ukhlov, “Conformal spectral stability for the Dirichlet–Laplace operator,” Math. Nachr. 288, 1822–1833 (2015).
5. V. Gol’dshtein and L. Gurov, “Applications of change of variables operators for exact embedding theorems,” Integr. Equations Operator Theory 19, 1–24 (1994).