@online{
   timsrc,
   author = "Bayer, Ernst AND Häfelinger, Günter",
   title = "Chemie an der Schwelle des 21. Jahrhunderts, Studium Generale, WiSe 1999/2000, 17.11.1999",
   publisher = "Universität Tübingen",
   year = "1999",
   month = "Nov",
   day = "17",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_19991117_001_chemiering_0001",
   urldate = "2024-05-04"
}