@online{ timsrc, author = "Oberhammer, Heinz AND Häfelinger, Günter", title = "Chemie an der Schwelle des 21. Jahrhunderts, Studium Generale, WiSe 1999/2000, 10.11.1999", publisher = "Universität Tübingen", year = "1999", month = "Nov", day = "10", url = "https://timms.uni-tuebingen.de:443/tp/UT_19991110_001_chemiering_0001", urldate = "2024-05-17" }