VIKAINIS, Roberts; TALAPINS, Sergejs; MATVEJEVS, Romans. PRESENCE DETECTION SYSTEMS - EFFICIENCY OF USE, BEST PRACTICE. Border Security and Management, Rezekne, Latvia, v. 4, n. 9, p. 135–143, 2023. DOI: 10.17770/bsm.v4i9.7039. Disponível em: https://bsm-journals.rtu.lv/bsm/article/view/98.. Acesso em: 2 apr. 2026.