V. Kiran, K. Rajani Devi, J. Niranjan Goud. Common fixed point theorems for three self maps of a complete \(S\)-metric space. Malaya J. Mat. [Internet]. 2020 Jan. 1 [cited 2024 Nov. 4];8(01):288-93. Available from: https://www.malayajournal.org/index.php/mjm/article/view/1398