@online{
   timsrc,
   author = "Hanack, Michael AND Häfelinger, Günter",
   title = "Vorlesung Experimentalchemie II, Organische Chemie, SoSe 1999, 21.05.1999, 21. Stunde",
   publisher = "Universität Tübingen",
   year = "1999",
   month = "May",
   day = "21",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_19990521_001_chemieorg_0001",
   urldate = "2024-05-14"
}