Qin, H., S. Ke, X. Yang, H. Xu, X. Zhan, and Y. Zheng. “Robust Spatio-Temporal Purchase Prediction via Deep Meta Learning”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 5, May 2021, pp. 4312-9, doi:10.1609/aaai.v35i5.16556.