DONG, Xinyue. Design Of High-Altitude Falling Object Alert System. International Journal of Computer Science and Information Technology, U.K., v. 3, n. 3, p. 138–172, 2024. DOI: 10.62051/ijcsit.v3n3.16. Disponível em: https://wepub.org/index.php/IJCSIT/article/view/3065. Acesso em: 9 may. 2026.