@online{ timsrc, author = "Ziegler, Thomas", title = "Vorlesung Grundlagen der Organischen Chemie, 19. und 20. Stunde", publisher = "Universität Tübingen", year = "2021", month = "May", day = "18", url = "https://timms.uni-tuebingen.de:443/tp/UT_20210518_001_sose21orgchem_0001", urldate = "2024-03-28" }