@online{
   timsrc,
   author = "Kley, Wilhelm",
   title = "Die Enträtselung des Universums",
   publisher = "Universität Tübingen",
   year = "2007",
   month = "Dec",
   day = "18",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20071218_001_rvunivers_0001",
   urldate = "2024-05-07"
}