@online{ timsrc, author = "Hoffmann, Volker", title = "Symmetrie in Wissenschaft und Kunst II - Symmetrie in der Molekül-Spektroskopie", publisher = "Universität Tübingen", year = "2002", month = "Jul", day = "08", url = "https://timms.uni-tuebingen.de:443/tp/UT_20020708_001_symmetrie_0001", urldate = "2024-04-28" }