Abu Joudeh , A. A., and G. Gát. 2021. “Almost Everywhere Convergence of Cesàro Means of Two Variable Walsh – Fourier Series With Varying Parameteres”. Ukrains’kyi Matematychnyi Zhurnal 73 (3), 291 - 307. https://doi.org/10.37863/umzh.v73i3.196.