Al-Zieady, Mary Gadbaan Thoubaan. “CONTRACTION MAPPING THEOREM OF THE SPACE OF FUZZY NUMBERS”. Al-Nahrain Journal of Science 13, no. 2 (June 1, 2010): 183–188. Accessed May 22, 2026. https://anjs.edu.iq/index.php/anjs/article/view/1117.