Salim, M., A. R. M. Rosdzimin, K. Osman, A. Noordin, and M. Mohd Rosli. “Image Classification of Temperature Distribution Using Fourier Series Strategy”. Journal of Mechanical Engineering and Technology (JMET), vol. 2, no. 1, Aug. 2015, pp. 11-24, https://jmet.utem.edu.my/jmet/article/view/376.