Gutlyanskii, V.Ya., V. I. Ryazanov, and Е. Якубов. 2025. “Toward the Theory of the Dirichlet Problem for the Beltrami Equations”. Reports of the National Academy of Sciences of Ukraine, no. 11 (February). Kyiv, Ukraine:23-29. https://doi.org/10.15407/dopovidi2015.11.023.