LENNY HUSNA; UKAS UKAS. Agreement On Settling The Flight Informtion Region (FIR) Boundary Line Between Indonesia And Singapore On Indonesia’s Southernmost Island. International Journal of Social Welfare and Family Law, [S. l.], v. 2, n. 1, p. 47–56, 2025. DOI: 10.62951/ijsw.v2i1.181. Disponível em: https://international.appisi.or.id/index.php/IJSW/article/view/181. Acesso em: 2 apr. 2026.