PETER, Uli. In Memoriam Karl Heidinger †. Zeitschrift des Zabergäuvereins, [S. l.], n. 1, p. 39, 2019. DOI: 10.53458/mm0jqb36. Disponível em: https://journals.wlb-stuttgart.de/index.php/zz/article/view/19307. Acesso em: 11 mar. 2026.