BYANJU, R. M.; GEWALI, M. B.; MANANDHAR, K. Low cost Passive Monitoring of Nitrogen dioxide and Sulphur dioxide in ambient air. Journal of Nepal Chemical Society, [S. l.], v. 27, n. 1, p. 34–45, 2012. DOI: 10.3126/jncs.v27i1.6439. Disponível em: https://www.nepjol.info/index.php/JNCS/article/view/6439. Acesso em: 23 jul. 2024.