@online{ timsrc, author = "Vicanek Martinez, Olivia AND Cederbaum, Carla", title = "Vorlesung Geometrie, 49. und 50. Stunde", publisher = "Universität Tübingen", year = "2023", month = "Feb", day = "01", url = "https://timms.uni-tuebingen.de:443/tp/UT_20230201_001_ws2223geomet_0001", urldate = "2024-12-14" }