Jens Halfwassen (1958-2020). ΠΗΓΗ/FONS, [S. l.], v. 6, n. 1, p. 169–171, 2022. DOI: 10.20318/fons.2021.6778. Disponível em: https://e-revistas.uc3m.es/index.php/FONS/article/view/6778. Acesso em: 5 dic. 2025.