@online{ timsrc, author = "Keppeler, Stefan", title = "Vorlesung Mathematik 2 für Naturwissenschaftler, 19. Stunde", publisher = "Universität Tübingen", year = "2018", month = "May", day = "28", url = "https://timms.uni-tuebingen.de:443/tp/UT_20180528_001_mathnat2_0001", urldate = "2024-03-28" }