@online{ timsrc, author = "Haussmann, Helmut AND Tenzer, Helene", title = "Vorlesung Grundlagen der Marktführerschaft, 1. und 2. Stunde", publisher = "Universität Tübingen", year = "2021", month = "Apr", day = "29", url = "https://timms.uni-tuebingen.de:443/tp/UT_20210429_001_sose21grundmarkt_0001", urldate = "2024-11-22" }