Salimov R. R., and Stefanchuk M. V. 2021. “Logarithmic Asymptotics of the Nonlinear Cauchy – Riemann – Beltrami Equation”. Ukrains’kyi Matematychnyi Zhurnal 73 (3), 395 - 407. https://doi.org/10.37863/umzh.v73i3.6403.