@online{ timsrc, author = "Müther, Herbert AND Wharam, David", title = "Vorlesung Physik IV, 57. Stunde", publisher = "Universität Tübingen", year = "2004", month = "Jun", day = "30", url = "https://timms.uni-tuebingen.de:443/tp/UT_20040630_001_physik4_0001", urldate = "2024-12-21" }