Sonker, Smita, Alka Munjal, and Lakshmi Narayan Mishra. “Absolute │A; δ │<sub>k</sub> and │A; γ; δ│<sub>k</Sub> Summability for N-Tupled Triangle Matrices”. Journal of Nepal Mathematical Society 3, no. 2 (December 30, 2020): 27–34. Accessed August 19, 2022. https://www.nepjol.info/index.php/jnms/article/view/33957.