Bhardwaj, Vinod K., and Indu Bala. “The Sequence Space $ F (X_{k}, F, P, S) $ on Seminormed Spaces”. Tamkang Journal of Mathematics 40, no. 3 (September 30, 2009): 247–256. Accessed May 6, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/504.