RINGEL, Claus-Michael; RINGEL, Barbara. Sinuskurven überall: Zur Mathematik der Panorama-Fotografie. mathematica didactica , [S. l.], v. 29, n. 2, p. 75–113, 2021. DOI: 10.18716/ojs/md/2006.1193. Disponível em: https://journals.ub.uni-koeln.de/index.php/mathematica_didactica/article/view/1193. Acesso em: 3 juli. 2024.