CHARAN, C.; PANDEY, R. An Adaptive Spectrum-Sensing Algorithm for Cognitive Radio Networks based on the Sample Covariance Matrix. Defence Science Journal, [S. l.], v. 67, n. 3, p. 325–331, 2017. DOI: 10.14429/dsj.67.10506. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/10506. Acesso em: 6 jul. 2025.