@online{ timsrc, author = "Häfelinger, Günter", title = "Vorlesung Experimentalchemie II, Organische Chemie, SoSe 2002, 52. Stunde", publisher = "Universität Tübingen", year = "2002", month = "Jul", day = "19", url = "https://timms.uni-tuebingen.de:443/tp/UT_20020719_002_chemorg_0001", urldate = "2024-10-11" }