MATUSZKINA, Olga. Variations of the fundamental frequency in polish voiced consonants. Archives of Acoustics, [S. l.], v. 3, n. 2, p. 105–119, 1978. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/3401. Acesso em: 22 apr. 2026.