Santoro, Daniela. „The Treatment of Old Age at Court. The Kings of Sicily from Roger II to Martin II (11th–15th Century)“. In Old Age before Modernity: Case Studies and Methodological Perspectives, 500 BC ‒ 1700 AD, herausgegeben von Christian Alexander Neumann, 311–331. Online-Schriften des DHI Rom. Neue Reihe: Pubblicazioni online del DHI Roma. Nuova serie 8. Heidelberg: Heidelberg University Publishing, 2023. Zugegriffen Juli 17, 2024. https://heiup.uni-heidelberg.de/catalog/book/1086/chapter/14948.