Mohammadi, Fakhordin, Junbin Gao, and Daming Shi. “Rotation Invariant Texture Analysis Using Radon and Fractional Fourier Transform”. INFOCOMP Journal of Computer Science 13, no. 2 (December 1, 2014): 1-9. Accessed August 8, 2020. http://infocomp.dcc.ufla.br/index.php/infocomp/article/view/390.