Wang, H., S. Sikdar, X. Guo, L. Xia, Y. Cao, and H. Wang. “Multi-Type Resource Allocation With Partial Preferences”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 02, Apr. 2020, pp. 2260-7, doi:10.1609/aaai.v34i02.5603.