GUO, T.; ZHANG, H.; YOO, B.; LIU, Y.; KWAK, Y.; HAN, J.-J. Order Regularization on Ordinal Loss for Head Pose, Age and Gaze Estimation. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 35, n. 2, p. 1496-1504, 2021. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/16240. Acesso em: 18 aug. 2022.