Guo, T., Zhang, H., Yoo, B., Liu, Y., Kwak, Y. and Han, J.-J. (2021) “Order Regularization on Ordinal Loss for Head Pose, Age and Gaze Estimation”, Proceedings of the AAAI Conference on Artificial Intelligence, 35(2), pp. 1496-1504. doi: 10.1609/aaai.v35i2.16240.