@online{ timsrc, author = "Widder, Ellen", title = "Kinder-Uni 2005 - Warum gibt es Städte und Dörfer?", publisher = "Universität Tübingen", year = "2005", month = "May", day = "03", url = "https://timms.uni-tuebingen.de:443/tp/UT_20050503_001_kinderuni2005_0001", urldate = "2024-11-27" }