@online{ timsrc, author = "Braun, Daniel", title = "Vorlesung Quantenmechanik, 19. und 20. Stunde", publisher = "Universität Tübingen", year = "2021", month = "May", day = "19", url = "https://timms.uni-tuebingen.de:443/tp/UT_20210519_001_sose21quantmech_0001", urldate = "2024-03-28" }