@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 = "2024-11-22" }