@online{ timsrc, author = "Potthast, Thomas AND Ritter, Alfred Theodor", title = "Sustainability Lecture mit Alfred Theodor Ritter", publisher = "Universität Tübingen", year = "2018", month = "Nov", day = "15", url = "https://timms.uni-tuebingen.de:443/tp/UT_20181115_001_nachhalttag_0002", urldate = "2024-12-02" }