Ramí­rez-Valdez, Leonel, and Rogelio Hasimoto-Beltran. “3D?Facial Expression Synthesis and Its Application to Face Recognition Systems”. Journal of Applied Research and Technology 7, no. 03 (December 1, 2009). Accessed April 25, 2024. https://jart.icat.unam.mx/index.php/jart/article/view/491.