Mohammadi, F., J. Gao, and D. Shi. “Rotation Invariant Texture Analysis Using Radon and Fractional Fourier Transform”. INFOCOMP Journal of Computer Science, vol. 13, no. 2, Dec. 2014, pp. 1-9, https://infocomp.dcc.ufla.br/index.php/infocomp/article/view/390.