QUANG, T. N. Fine and ultrafine particle concentrations at Hanoi primary schools. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, [S. l.], v. 11, n. 6, p. 162–167, 2017. Disponível em: https://stce.vjst.net/index.php/en/article/view/952. Acesso em: 18 sep. 2026.