Karazon AHM, Amer MM. (On Summability Of Double Fourier Series By (N,p,q,p ́,q ́ )(E,1,1. JNSLAS [Internet]. 2018 Dec. 30 [cited 2025 Dec. 20];2(4):40-25. Available from: https://ajsrp.ojsexpert.com/index.php/jnslas/article/view/992