@online{ timsrc, author = "Roth, Hermann Josef AND Hahn, Werner AND Springer, Walter", title = "Symmetrie in Wissenschaft und Kunst I - Ausstellung", publisher = "Universität Tübingen", year = "2002", month = "Jan", day = "17", url = "https://timms.uni-tuebingen.de:443/tp/UT_20020117_001_symmetrie_0001", urldate = "2024-09-08" }