Lee, Chau Ching, et al. “A Supervised Deep Feedforward Neural Network (SDFNN)-Based Image Reconstruction Algorithm for Radio Tomographic Imaging”. ELEKTRIKA- Journal of Electrical Engineering, vol. 20, no. 2-3, Oct. 2021, pp. 49-55, https://elektrika.utm.my/index.php/ELEKTRIKA_Journal/article/view/310.