Liu, Xiang, Weiwei Wu, Minming Li, and Wanyuan Wang. “Budget Feasible Mechanisms Over Graphs”. Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 6 (May 18, 2021): 5549-5556. Accessed September 24, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/16698.