@online{ timsrc, author = "Böhme, Madelaine", title = "Vorlesung Einführung in die Stratigraphie-V, 7. und 8. Stunde", publisher = "Universität Tübingen", year = "2020", month = "May", day = "13", url = "https://timms.uni-tuebingen.de:443/tp/UT_20200513_001_strati_0001", urldate = "2024-11-21" }