Hsieh, H.-P., C.-T. Li, and X. Gao. “T-Gram: A Time-Aware Language Model to Predict Human Mobility”. Proceedings of the International AAAI Conference on Web and Social Media, vol. 9, no. 1, Aug. 2021, pp. 614-7, doi:10.1609/icwsm.v9i1.14663.