Zhong, D., & Yuan, W. (2021). Hyperbolically Lipschitz continuity, area distortion and coefficient estimates for $(K,K′)$-quasiconformal harmonic mappings of unit disk. Ukrains’kyi Matematychnyi Zhurnal, 73(2), 151 - 159. https://doi.org/10.37863/umzh.v73i2.6041