Liang Thon, Pun, et al. “Investigation of ConViT on COVID-19 Lung Image Classification and the Effects of Image Resolution and Number of Attention Heads”. International Journal of Integrated Engineering, vol. 15, no. 3, July 2023, pp. 54-63, https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/12813.