Evaluating Sustainability Achievements in China-Africa Relations under the Forum for China-Africa Cooperation (FOCAC): A Fuzzy SIWEC Methodology. J. Expert Syst. Sustain. Dev. [Internet]. 2026 Mar. 2 [cited 2026 May 19];2(1):58-67. Available from: https://essd-journal.org/index.php/essd/article/view/11