Đức, D. A., T. M. Triết, and L. H. Cơ. “The 256/384/512-Bit Version of the Rijndael Block Cipher”. Journal of Computer Science and Cybernetics, vol. 17, no. 4, Aug. 2012, pp. 45-57, doi:10.15625/1813-9663/17/4/2291.