Purcaru, Ion. “Note Sur La fidélité Entropique d’un Canal De Communications: Note on the Entropic Fidelity of a Communication Channel”. Anal. Numér. Théor. Approx. 20, no. 1 (August 1, 1991): 65–67. Accessed July 3, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1991-vol20-nos1-2-art9.