S. Kherchaoui and A. Houacine, Curvelet Features with Mouth and Face Edge Ratios for Facial Expression Identification. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2014, vol. 90(6). 954 - 956 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/9998501.