Khanpanuk T, Khunpanuk C. Further investigation on fixed point theorems via C-class functions in extended b-metric spaces. J Appl Res Sci Tech [internet]. 2023 Aug. 29 [cited 2025 Apr. 25];22(2):251308. available from: https://ph01.tci-thaijo.org/index.php/rmutt-journal/article/view/251308