Choirina, P. ., I. M. . Fitriani, U. D. . Rosiani, M. N. . Mufti, F. A. . Arsistawa, and P. P. . Darajat. “Improved Micro-Expression Recognition: An Apex Frame-Based Approach Feature Tracking and KLT”. Jurnal Teknik Informatika (Jutif), vol. 6, no. 2, Apr. 2025, pp. 593-08, doi:10.52436/1.jutif.2025.6.2.4235.