@online{
   timsrc,
   author = "Grupe, Ommo",
   title = "O-Cup",
   publisher = "Universität Tübingen",
   year = "1999",
   month = "Jan",
   day = "01",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_19990101_001_ocup_0001",
   urldate = "2024-04-19"
}