@online{ timsrc, author = "Häfelinger, Günter", title = "Vorlesung Experimentalchemie II, Organische Chemie, SoSe 2002, 23. Stunde", publisher = "Universität Tübingen", year = "2002", month = "May", day = "31", url = "https://timms.uni-tuebingen.de:443/tp/UT_20020531_001_chemorg_0001", urldate = "2024-12-14" }