@online{
   timsrc,
   author = "Lubich, Christian AND Nick, Jörg",
   title = "Vorlesung Numerik, 45. Stunde",
   publisher = "Universität Tübingen",
   year = "2023",
   month = "Jan",
   day = "20",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20230120_001_ws2223numerik_0001",
   urldate = "2024-04-25"
}