Bitencourt Barreto Maciel de Souza, Marcelle, and Marcus Vinicius Ivo da Silva. “Evidence of the Association Between Mask Use and Vocal Effort: A Brief Review of the Literature”. Electronic Journal of Exact and Technological Sciences, vol. 5, no. 1, Feb. 2024, https://periodicos.ufrb.edu.br/index.php/recet/article/view/3211.