SZOPA, Jan. Heredity of head dimensions and of cephalic index in man. Anthropological Review, Poland, v. 43, n. 1, p. 55–66, 1977. DOI: 10.18778/1898-6773.43.1.03. Disponível em: https://czasopisma.uni.lodz.pl/ar/article/view/20505. Acesso em: 8 aug. 2026.