DAGHMECHI FIROOZJAEI, M.; VAHIDI, J. Implementing Geo-Encryption in GSM Cellular Network. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), [S. l.], v. 4, n. 1, p. 1–8, 2015. Disponível em: https://jtec.utem.edu.my/jtec/article/view/468. Acesso em: 4 may. 2024.