@online{ timsrc, author = "Ziegler, Thomas", title = "Vorlesung Grundlagen der Organischen Chemie, 21. und 22. Stunde", publisher = "Universität Tübingen", year = "2021", month = "May", day = "31", url = "https://timms.uni-tuebingen.de:443/tp/UT_20210531_001_sose21orgchem_0001", urldate = "2024-12-02" }