@online{ timsrc, author = "Müther, Herbert AND Wharam, David", title = "Vorlesung Physik IV, 23. Stunde", publisher = "Universität Tübingen", year = "2004", month = "May", day = "13", url = "https://timms.uni-tuebingen.de:443/tp/UT_20040513_001_physik4_0001", urldate = "2024-12-22" }