G. J. KAZMIERCZAK2, A. V. T. and. Periodic Discrete Non-Binary Signals with Perfect Autocorrelation. International Journal of Engineering Technology and Computer Research, [S. l.], v. 5, n. 3, 2017. Disponível em: https://www.ijetcr.org/index.php/ijetcr/article/view/386. Acesso em: 25 may. 2026.