Thaiphan, R., Srinounpan, C., Sornkliang, W., Naksuwan, J., Chukeaw, A., Rattaphun, M. and Songsri-in, K. 2022. Training Deep Neural Networks for Facial Landmarks Detection by Predicting Principal Component Analysis’s Coefficients. PKRU SciTech Journal. 6, 2 (Dec. 2022), 21–31.