@online{ timsrc, author = "Müther, Herbert AND Wharam, David", title = "Vorlesung Physik III, 18. Stunde", publisher = "Universität Tübingen", year = "2003", month = "Oct", day = "30", url = "https://timms.uni-tuebingen.de:443/tp/UT_20031030_002_physik3_0001", urldate = "2024-03-29" }