WIKMAN, K. I. Learning and magic. Scripta Instituti Donneriani Aboensis, [S. l.], v. 4, p. 24–56, 1970. DOI: 10.30674/scripta.67045. Disponível em: https://journal.fi/scripta/article/view/67045. Acesso em: 5 may. 2024.