Luong, T. T., and N. N. Cuong. “DIRECT EXPONENT AND SCALAR MULTIPLICATION TRANSFORMATIONS OF MDS MATRICES: SOME GOOD CRYPTOGRAPHIC RESULTS FOR DYNAMIC DIFFUSION LAYERS OF BLOCK CIPHERS”. Journal of Computer Science and Cybernetics, vol. 32, no. 1, June 2016, pp. 1-17, doi:10.15625/1813-9663/32/1/7732.