@electronic{www.radroutenplaner.hessen.de,
   title       = {Radroutenplaner Hessen}, 
   url         = {http://www.radroutenplaner.hessen.de/},
   biburl      = {https://puma.uni-kassel.de/url/d74972b7ad56a82c97e5a6b03156df57/stumme},
   keywords    = {EveryAware Fahrrad Rad Route Routenplaner hessen radroutenplaner},
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}

@electronic{www.codefromthe70s.org,
   title       = {CodeFromThe70s.org}, 
   url         = {http://www.codefromthe70s.org/traceroute.asp},
   biburl      = {https://puma.uni-kassel.de/url/f612f762d976254eddefbbc99b62057f/stumme},
   keywords    = {ip route trace traceroute},
   added-at    = {2007-09-21T08:38:27.000+0200},
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