Shan Li and Weihong Deng. Deep Facial Expression Recognition: A Survey.IEEE.2020 [6] Dami Jeong, Byung-Gyu Kim ,Suh-Yeon Dong.Deep Joint Spatiotemporal Network (DJSTN) for Efficient Facial Expression Recognition.Sensors 2020, 20(7).2020I [7] Huiting Wua,Yanshen Liua,Yi Liub,Sanya Liua.Efficient facial expression recognition via convolution neural network and infrared imaging technology Physics & Technology.Volume 102,. 2019 [8] Shikai Chen, Jianfeng Wang, Yuedong Chen, Zhongchao Shi, Xin Geng, Yong Rui,Southeast University 2University of Oxford 3Nanyang Technological University,AI Lab, Lenovo Research.Label Distribution Learning on Auxiliary Label Space Graphs for Facial Expression Recognition.CVPR2020 [9] Kai Wang,Xiaojiang Peng,Jianfei Yang,Shijian Lu,Yu Qiao. Suppressing Uncertainties for Large-Scale Facial Expression Recognition.CVPR2020 [10]Jie Cai ,Zibo Meng, Ahmed Shehab Khan, Zhiyuan Li , James O’Reilly, and Yan Tong. Identity-Free Facial Expression Recognition using conditional Generative Adversarial Network .arXiv.2019