Adetunji, A., J. Oguntoye, O. Fenwa, and E. Omidiora. “FACIAL EXPRESSION RECOGNITION BASED ON CULTURAL PARTICLE SWAMP OPTIMIZATION AND SUPPORT VECTOR MACHINE”. LAUTECH Journal of Engineering and Technology, Vol. 10, no. 1, Feb. 2016, pp. 94-02, https://laujet.com/index.php/laujet/article/view/43.