@online{
   timsrc,
   author = "Kohler, Wilhelm",
   title = "Lecture Advanced Microeconomics, 20. and 21. Lesson",
   publisher = "Universität Tübingen",
   year = "2021",
   month = "Dec",
   day = "02",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20211202_001_ws2022advmicroeco_0001",
   urldate = "2024-04-16"
}