MACH, P.; BECVAR, Z.; VONDRA, M. Distributed Hybrid Spectrum Access for Cognitive Femtocells in 5G Mobile Networks. Elektronika ir Elektrotechnika, [S. l.], v. 22, n. 6, p. 85 - 91, 2016. DOI: 10.5755/j01.eie.22.6.13474. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/13474. Acesso em: 7 oct. 2022.