STENGEL, Walter. Jugendzeit in Botenheim. Zeitschrift des Zabergäuvereins, [S. l.], n. 3-4, p. 8–18, 2006. DOI: 10.53458/77as0v12. Disponível em: https://journals.wlb-stuttgart.de/index.php/zz/article/view/19459. Acesso em: 11 mar. 2026.