@online{
   timsrc,
   author = "Ruder, Hanns",
   title = "Physik und ihre Anwendungen",
   publisher = "Universität Tübingen",
   year = "2004",
   month = "Oct",
   day = "19",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20041019_001_rvruder_0001",
   urldate = "2024-05-07"
}