Huiyang Chen*, Yueyue Tong, Yuke Cai. Research on resource allocation of drug safety supervision in Ningxia based on PSO-GM(1,1) and GRA. ISTAER. 2025;1(3):1-14. Accessed April 11, 2026. https://www.istaer.online/index.php/Home/article/view/No.2311