NYKÄNEN, P. The Big Picture Bjerringbrossa: Bjerringbro. Tekniikan Waiheita, [S. l.], v. 17, n. 3, p. 43, 1999. Disponível em: https://journal.fi/tekniikanwaiheita/article/view/154330. Acesso em: 25 joulu. 2024.