Kurniawan K, Wulandhari LA, Gondosiswojo ARP. Facial Expression Recognition inCovid-19 Pandemic EraUsing 2 Stage Convolutional Neural Network. json [Internet]. 2023 Sep. 29 [cited 2025 Oct. 28];5(1):102-11. Available from: https://ejurnal.stmik-budidarma.ac.id/index.php/JSON/article/view/6768