@online{ timsrc, author = "Cederbaum, Carla", title = "Vorlesung Geometrie, 21. und 22. Stunde", publisher = "Universität Tübingen", year = "2022", month = "Nov", day = "25", url = "https://timms.uni-tuebingen.de:443/tp/UT_20221125_001_ws2223geomet_0001", urldate = "2024-12-27" }