VIKAINIS, Roberts; GUTĀNE, Agita. TECHNICAL SURVEILLANCE SYSTEM OF THE EXTERNAL LAND BORDER, ITS DEVELOPMENT PERSPECTIVES. BORDER SECURITY AND MANAGEMENT, Rezekne, Latvia, v. 5, n. 10, p. 258–268, 2025. DOI: 10.17770/bsm.v5i10.8304. Disponível em: https://journals.rta.lv/index.php/BSM/article/view/8304.. Acesso em: 26 mar. 2025.