@online{ timsrc, author = "Cederbaum, Carla", title = "Vorlesung Geometrie, 31. und 32. Stunde", publisher = "Universität Tübingen", year = "2022", month = "Dec", day = "14", url = "https://timms.uni-tuebingen.de:443/tp/UT_20221214_001_ws2223geomet_0001", urldate = "2024-03-29" }