@online{ timsrc, author = "Häfelinger, Günter", title = "Vorlesung Experimentalchemie II, Organische Chemie, SoSe 2002, 33. Stunde", publisher = "Universität Tübingen", year = "2002", month = "Jun", day = "20", url = "https://timms.uni-tuebingen.de:443/tp/UT_20020620_001_chemorg_0001", urldate = "2024-11-21" }