Ferreira, L. R., E. F. T. Borges, and G. de C. Grigoletti. “Subjective Analysis Of Soundscape In Three Areas In The Brazilian City In The Legal Amazon Region”. Canadian Acoustics, vol. 49, no. 4, Dec. 2021, https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3435.