Jing, B., V. Prabhu, A. Gu, and J. Whaley. “Rotation-Invariant Gait Identification With Quaternion Convolutional Neural Networks (Student Abstract)”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 18, May 2021, pp. 15805-6, https://ojs.aaai.org/index.php/AAAI/article/view/17899.