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), pp. 21–31. available at: https://ph01.tci-thaijo.org/index.php/pkruscitech/article/view/248094 (accessed: 21 January 2025).