Saha AK, Bhattacharya D. Countable Fuzzy Topological Space and Countable Fuzzy Topological Vector Space. J. Math. Fund. Sci. [Internet]. 2015Jun.1 [cited 2025Oct.20];47(2):154-66. Available from: https://journals.itb.ac.id/index.php/jmfs/article/view/533