FRØKJÆR-JENSEN, B. The Danish Long Vowels . Annual Report of the Institute of Phonetics University of Copenhagen, [S. l.], v. 1, p. 34–46, 1967. DOI: 10.7146/aripuc.v1i.130541. Disponível em: https://tidsskrift.dk/ARIPUC/article/view/130541. Acesso em: 5 may. 2024.