MCLEISH, T.; GARRISON, M. Reversals in Wartime: Alcuin and Charlemagne discuss Retrograde Motion. Interfaces: A Journal of Medieval European Literatures, [S. l.], n. 8, p. 14–53, 2021. DOI: 10.54103/interfaces-08-03. Disponível em: https://riviste.unimi.it/interfaces/article/view/14210. Acesso em: 18 jul. 2024.