@electronic{mapstory.org,
   title       = {MapStory : Welcome!}, 
   url         = {http://mapstory.org/},
   biburl      = {https://puma.uni-kassel.de/url/9cd562e7bda8d5397ed3b968037cd78f/stumme},
   keywords    = {Karte Karten map maps mapstoryosm},
   added-at    = {2013-06-12T14:25:20.000+0200},
   description = {},
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   intrahash   = {9cd562e7bda8d5397ed3b968037cd78f}
}

@electronic{www.mapplus.ch,
   title       = {MapPlus by TYDAC}, 
   url         = {http://www.mapplus.ch/?size=2},
   biburl      = {https://puma.uni-kassel.de/url/deefe6f54fa20ddaf89bdaaa7709e8a2/stumme},
   keywords    = {Schweiz geop karte landkarte map topo topographische},
   added-at    = {2010-04-06T11:11:41.000+0200},
   description = {},
   interhash   = {deefe6f54fa20ddaf89bdaaa7709e8a2}, 
   intrahash   = {deefe6f54fa20ddaf89bdaaa7709e8a2}
}

@electronic{topo.geofabrik.de,
   title       = {OSMC Reit- und Wanderkarte}, 
   url         = {http://topo.geofabrik.de/},
   biburl      = {https://puma.uni-kassel.de/url/8a0be07f22455fd9850413b90b1f3f8f/stumme},
   keywords    = {everyaware karte map osm topo wanderkarte},
   added-at    = {2009-09-04T11:28:40.000+0200},
   description = {},
   interhash   = {8a0be07f22455fd9850413b90b1f3f8f}, 
   intrahash   = {8a0be07f22455fd9850413b90b1f3f8f}
}

@electronic{www.openstreetmap.de,
   title       = {OpenStreetMap: Die freie Wiki-Weltkarte}, 
   url         = {http://www.openstreetmap.de/},
   biburl      = {https://puma.uni-kassel.de/url/f8933284f909861eddf344e32d55da85/stumme},
   keywords    = {Weltkarte gps karte straßenkarte trace traces},
   added-at    = {2008-09-29T11:02:34.000+0200},
   description = {},
   interhash   = {f8933284f909861eddf344e32d55da85}, 
   intrahash   = {f8933284f909861eddf344e32d55da85}
}

@electronic{www.openstreetmap.de,
   title       = {OpenStreetMap Deutschland :: Hauptseite}, 
   url         = {http://www.openstreetmap.de/index.html},
   biburl      = {https://puma.uni-kassel.de/url/176177141942632ac591edfb90ad214c/stumme},
   keywords    = {geo geotgging karte map},
   added-at    = {2008-03-11T10:51:36.000+0100},
   description = {},
   interhash   = {176177141942632ac591edfb90ad214c}, 
   intrahash   = {176177141942632ac591edfb90ad214c}
}