WALKER, N; GALPIN, S; PIENAAR, A.E. Predicting urban smoke concentrations. Clean Air Journal, [S. l.], v. 7, n. 4, 1987. DOI: 10.17159/caj/1987/7/4.7290. Disponível em: https://cleanairjournal.org.za/article/view/7290. Acesso em: 2 may. 2024.