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://bsm-journals.rtu.lv/bsm/article/view/117.. Acesso em: 2 apr. 2026.