1. YANN LECUN, MEMBER, IEEE, L´ EON BOTTOU, YOSHUA BENGIO, AND PATRICK HAFFNER, Gradient-Based Learning Applied to Document Recognition, PROCEEDINGS OF THE IEEE, VOL. 86, NO. 11, NOVEMBER 1998
2. Shima Alizadeh, Azar Fazel. Convolutional Neural Networks for Facial Expression Recognition, Stanford University, 2016
3. Raghuvanshi, Arushi, and Vivek Choksi. "Facial Expression Recognition with Convolutional Neural Networks." Stanford University, 2016
4. Alizadeh, Shima, and Azar Fazel. "Convolutional Neural Networks for Facial Expression Recognition." Stanford University, 2016
5. Diah Anggraeni, Pitalokaa,, Ajeng Wulandaria, T. Basaruddina, Dewi Yanti Lilianaa. Enhancing CNN with Preprocessing Stage in Automatic Emotion Recognition. 2nd International Conference on Computer Science and Computational Intelligence 2017, ICCSCI 2017, 13-14 October 2017.