KLUEPPEL, J. Manlio Graziano, What is a Border?. Konturen, [S. l.], v. 11, p. 174–180, 2020. DOI: 10.5399/uo/konturen.11.0.4836. Disponível em: https://journals.oregondigital.org/konturen/article/view/5920. Acesso em: 30 mar. 2025.