AL-RAMMAHI, Adel Mohammad Hassan Rizak. NEW PROPOSED METHODS FOR CODING INFORMATION USING DIRECT PRODUCT OF SYMMETRIC MATRICES AND CONTRACTION FUNCTIONS WITH NEW PROPERTIES OF HERMITIAN MATRICES. Journal of Kufa for Mathematics and Computer, Kufa, Najaf, IRAQ, v. 1, n. 1, p. 81–90, 2010. DOI: 10.31642/JoKMC/2018/010111. Disponível em: https://journal.uokufa.edu.iq/index.php/jkmc/article/view/12769. Acesso em: 21 may. 2026.