KARSLI, H., & VURAL, M. (2015). On convergence of nonlinear singular integral operators with non-isotropic kernels. Studia Universitatis Babeș-Bolyai Mathematica, 60(2), 267–275. Retrieved from https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5733