GIER, O. Die "Rondos": Backnangs legendäre Schleuderbrettakrobaten. Backnanger Jahrbuch, [S. l.], v. 11, p. 35–68, 2003. DOI: 10.53458/bjb.v11i.9145. Disponível em: https://journals.wlb-stuttgart.de/index.php/bjb/article/view/9145. Acesso em: 18 dez. 2024.