Yalçın, S., A. Ebadian, and S. Azizi. “A Proof of a Conjecture on Convolution of Harmonic Mappings and Some Related Problems”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 73, no. 2, Feb. 2021, pp. 283 -88, doi:10.37863/umzh.v73i2.94.