@online{
   timsrc,
   author = "Hauck, Peter",
   title = "Symmetrie in Wissenschaft und Kunst I - Symmetrie in der Mathematik",
   publisher = "Universität Tübingen",
   year = "2001",
   month = "Nov",
   day = "12",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20011112_001_symmetrie_0001",
   urldate = "2024-04-25"
}