FRØKJÆR-JENSEN, Børge. Acoustic-statistical analysis of voice quality. ARIPUC, [S. l.], v. 13, p. 189–200, 1979. DOI: 10.7146/aripuc.v13i.131721. Disponível em: https://tidsskrift.dk/ARIPUC/article/view/131721. Acesso em: 6 dec. 2025.