@online{ timsrc, author = "Kohler, Wilhelm", title = "Lecture Macroeconomics II, 3. and 4. Lesson", publisher = "Universität Tübingen", year = "2019", month = "Oct", day = "23", url = "https://timms.uni-tuebingen.de:443/tp/UT_20191023_001_makrooeko2_0001", urldate = "2024-11-23" }