S., I.; JOHNSEN, Jon. Meddelelser. Nordisk Tidsskrift for Kriminalvidenskab, [S. l.], v. 45, n. 2, p. 230–239, 1957. DOI: 10.7146/ntfk.v45i2.137900. Disponível em: https://tidsskrift.dk/NTfK/article/view/137900. Acesso em: 7 dec. 2025.