LÄPPLE, Alfred. Mensch und Tier, Orientierungsdaten aus Kulturgeschichte und Ethik. ALTEX - Alternatives to animal experimentation, [S. l.], v. 3, n. 2, p. 7–15, 1986. Disponível em: https://altex.org/index.php/altex/article/view/1939. Acesso em: 6 may. 2024.