ASSFAHL, Gerhard. Der Ochsenburger Steinbruch. Zeitschrift des Zabergäuvereins, [S. l.], n. 1, p. 5–8, 2004. DOI: 10.53458/kqjaj623. Disponível em: https://journals.wlb-stuttgart.de/index.php/zz/article/view/19475. Acesso em: 2 apr. 2026.