@online{
   timsrc,
   author = "Müther, Herbert AND Giacconi, Riccardo",
   title = "Kepler-Vorlesung 2003: Faszination der Röntgenastronomie",
   publisher = "Universität Tübingen",
   year = "2003",
   month = "Jul",
   day = "09",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20030709_001_kepler2003_0001",
   urldate = "2024-04-24"
}