@online{ timsrc, author = "Lubich, Christian", title = "Vorlesung Numerik, 51. Stunde", publisher = "Universität Tübingen", year = "2023", month = "Jan", day = "30", url = "https://timms.uni-tuebingen.de:443/tp/UT_20230130_001_ws2223numerik_0001", urldate = "2024-12-27" }