@online{ timsrc, author = "Maier, Martin AND Häfelinger, Günter", title = "Chemie an der Schwelle des 21. Jahrhunderts, Studium Generale, WiSe 1999/2000, 12.01.2000", publisher = "Universität Tübingen", year = "2000", month = "Jan", day = "12", url = "https://timms.uni-tuebingen.de:443/tp/UT_20000112_001_chemiering_0001", urldate = "2024-05-04" }