STANKIEWICZ, B.; ADAMCZYK, B.; ZIELIŃSKI, K.; DAROWSKI, M. Visual feedback based on expired CO2 as a therapy method for respiratory disturbances in stuttering. Archives of Acoustics, [S. l.], v. 31, n. 4, p. 439–444, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/733. Acesso em: 29 apr. 2025.