Karazon, Abdel Hadi Mohamed, and Mohamed Mahmoud Amer. 2018. “(On Summability Of Double Fourier Series By (N,p,q,p ́,q ́ )(E,1,1”. Journal of Natural Sciences, Life and Applied Sciences 2 (4): 40-25. https://doi.org/10.26389/AJSRP.A250718.