@online{
   timsrc,
   author = "Gugel, Günther",
   title = "Kriminalprävention: (Gewalt)Prävention in der Schule",
   publisher = "Universität Tübingen",
   year = "2011",
   month = "May",
   day = "05",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20110505_001_rvkrimi_0001",
   urldate = "2024-05-04"
}