BHAT, K.; JOGDAND, S.; MALSHE, S.; KELKAR, V. Hardware implementation of pi/4-DQPSK modem for mobile communication (Short Communication). Defence Science Journal, [S. l.], v. 51, n. 3, p. 315–320, 2002. DOI: 10.14429/dsj.51.2245. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/2245. Acesso em: 16 jun. 2025.