Hadelina, R., Rusydi, M. I., Firza, M., & Samuel, O. W. (2023). ANN Models for Shoulder Pain Detection based on Human Facial Expression Covered by Mask. JITCE (Journal of Information Technology and Computer Engineering), 7(01), 49–55. https://doi.org/10.25077/jitce.7.01.49-55.2023