FISCHER-JØRGENSEN, E. A note on vowel triangels and quadrangles - an answer to Hans Basbøll. Annual Report of the Institute of Phonetics University of Copenhagen, [S. l.], v. 18, p. 285–291, 1984. DOI: 10.7146/aripuc.v18i.131801. Disponível em: https://tidsskrift.dk/ARIPUC/article/view/131801. Acesso em: 20 apr. 2024.