@online{
   timsrc,
   author = "Koch, Wolfhard AND Häfelinger, Günter",
   title = "Chemie an der Schwelle des 21. Jahrhunderts, Studium Generale, WiSe 1999/2000, 24.11.1999",
   publisher = "Universität Tübingen",
   year = "1999",
   month = "Nov",
   day = "24",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_19991124_001_chemiering_0001",
   urldate = "2024-11-23"
}