Chen, Huiyang, Yueyue Tong, and Yuke Cai. “Research on Resource Allocation of Drug Safety Supervision in Ningxia Based on PSO-GM(1,1) and GRA”. International Scientific Technical and Economic Research 1, no. 3 (September 28, 2023): 1–14. Accessed November 2, 2026. https://dipscie.com/index.php/ISTAER/article/view/istaer2311.