Optimal strategies for supply chain with credit guarantee using CVaR Maojun Zhang, Lu Shen, Jiangxia Nan, Jizhou Wang, Zhonghang Xia and Yang Zhao RAIRO-Oper. Res., 58 4 (2024) 2669-2682 Published online: 02 July 2024 DOI: 10.1051/ro/2024051