FRØKJÆR-JENSEN, Børge. Statistic Calculations of Formant Data . Annual Report of the Institute of Phonetics University of Copenhagen, [S. l.], v. 2, p. 158–170, 1968. DOI: 10.7146/aripuc.v2i.130680. Disponível em: https://tidsskrift.dk/ARIPUC/article/view/130680. Acesso em: 5 dec. 2025.