BHALE, D.D.; JAIN, R.B. Performance Analysis of Hybrid Cognitive Gaussian Relay Channels. International Journal of Scientific Research in Network Security and Communication, [S. l.], v. 5, n. 2, p. 24–29, 2017. Disponível em: https://ijsrnsc.org/index.php/j/article/view/65. Acesso em: 23 feb. 2025.