@online{ timsrc, author = "Oberwinkler, Franz", title = "Vorlesung Botanik II, 20. Stunde", publisher = "Universität Tübingen", year = "2005", month = "May", day = "31", url = "https://timms.uni-tuebingen.de:443/tp/UT_20050531_001_botanik2_0001", urldate = "2024-11-23" }