@online{ timsrc, author = "Müther, Herbert AND Wharam, David", title = "Vorlesung Physik III, 30. Stunde", publisher = "Universität Tübingen", year = "2003", month = "Nov", day = "13", url = "https://timms.uni-tuebingen.de:443/tp/UT_20031113_002_physik3_0001", urldate = "2024-11-21" }