CARMESIN, Hans-Otto. Students Derive an Exact Solution of the Flatness Problem. PhyDid B - Didaktik der Physik - Beiträge zur DPG-Frühjahrstagung, [S. l.], v. 1, n. 1, 2023. Disponível em: https://ojs.dpg-physik.de/index.php/phydid-b/article/view/1352. Acesso em: 14 juli. 2024.