@electronic{www.makezine.com,
   title       = {MAKE: Blog: HOW TO geotagg del.icio.us bookmarks}, 
   url         = {http://www.makezine.com/blog/archive/2005/07/how_to_geotagg_1.html},
   biburl      = {https://puma.uni-kassel.de/url/e84de8b336564e981ea682bd8c6390bb/stumme},
   keywords    = {geo tagging geotagging},
   added-at    = {2006-01-20T13:21:56.000+0100},
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}

@electronic{en.wikipedia.org,
   title       = {GeoTagging - Wikipedia, the free encyclopedia}, 
   url         = {http://en.wikipedia.org/wiki/GeoTagging},
   biburl      = {https://puma.uni-kassel.de/url/5dd47d7ecaf906e14e217b1c198e38a4/stumme},
   keywords    = {geo tagging geotagging},
   added-at    = {2006-01-20T13:22:29.000+0100},
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   intrahash   = {5dd47d7ecaf906e14e217b1c198e38a4}
}

@electronic{portals.telin.nl,
   title       = {Context Watcher}, 
   url         = {http://portals.telin.nl/contextwatcher/ContextWatcher.html},
   biburl      = {https://puma.uni-kassel.de/url/38b3c96e11a001d2996b33f8bdfac9d3/hotho},
   keywords    = {mobile geo handy tagging},
   added-at    = {2006-07-13T09:16:57.000+0200},
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   intrahash   = {38b3c96e11a001d2996b33f8bdfac9d3}
}

@electronic{www.geocaching.com,
   title       = {Geocaching - The Official Global GPS Cache Hunt Site}, 
   url         = {http://www.geocaching.com/},
   biburl      = {https://puma.uni-kassel.de/url/ca2c373bc420e81d7beb33c54a40db76/hotho},
   keywords    = {cache gps geo Schatzsuche},
   added-at    = {2006-08-25T09:24:42.000+0200},
   description = {},
   interhash   = {ca2c373bc420e81d7beb33c54a40db76}, 
   intrahash   = {ca2c373bc420e81d7beb33c54a40db76}
}

@electronic{www.everytrail.com,
   title       = {Everytrail - The GPS Travel Community}, 
   url         = {http://www.everytrail.com/},
   biburl      = {https://puma.uni-kassel.de/url/80eedd50019945ed3b1f6606a1f621f8/stumme},
   keywords    = {GPS bookmarking geo gps navigation social tagging travel},
   added-at    = {2007-07-23T15:07:25.000+0200},
   description = {},
   interhash   = {80eedd50019945ed3b1f6606a1f621f8}, 
   intrahash   = {80eedd50019945ed3b1f6606a1f621f8}
}

@electronic{www.gpsies.com,
   title       = {GPSies.com - Home}, 
   url         = {http://www.gpsies.com/home.do;jsessionid=0327B2D63592F30A97EBCD12C9CB017B#6|51.163475|10.454239},
   biburl      = {https://puma.uni-kassel.de/url/bae84130c8637f291862351ca3dc636e/stumme},
   keywords    = {geo geotagging gps tagging},
   added-at    = {2007-07-23T15:07:58.000+0200},
   description = {},
   interhash   = {bae84130c8637f291862351ca3dc636e}, 
   intrahash   = {bae84130c8637f291862351ca3dc636e}
}

@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}
}

@electronic{www.flickr.com,
   title       = {Flickr: GeoTagging Flickr}, 
   url         = {http://www.flickr.com/groups/geotagging/},
   biburl      = {https://puma.uni-kassel.de/url/c3079ef57190af0b84b61af42969c1b4/hotho},
   keywords    = {2.0 flickr folksonomy geo geotagging gps tagging tools web},
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   description = {},
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   intrahash   = {c3079ef57190af0b84b61af42969c1b4}
}

@electronic{www.nokia.com,
   title       = {Nokia - Location Tagger}, 
   url         = {http://www.nokia.com/betalabs/locationtagger},
   biburl      = {https://puma.uni-kassel.de/url/006cb93b64ac75e3d0d432cd024c0625/hotho},
   keywords    = {Nokia geo gps location s60 tagger},
   added-at    = {2008-09-20T12:48:53.000+0200},
   description = {},
   interhash   = {006cb93b64ac75e3d0d432cd024c0625}, 
   intrahash   = {006cb93b64ac75e3d0d432cd024c0625}
}

@electronic{www.geocachenavigator.com,
   title       = {Geocache Navigator™ - geocaching with a GPS phone. Seek & Enjoy™ > Home}, 
   url         = {http://www.geocachenavigator.com/},
   biburl      = {https://puma.uni-kassel.de/url/dcb11e03a99fa5a9e278d663347d8c7d/hotho},
   keywords    = {cache geo geocaching gps nokia s60},
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   description = {},
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   intrahash   = {dcb11e03a99fa5a9e278d663347d8c7d}
}

@electronic{www.gpsbusinessnews.com,
   title       = {Twitter to get geolocation}, 
   url         = {http://www.gpsbusinessnews.com/Twitter-to-get-geolocation_a1688.html},
   biburl      = {https://puma.uni-kassel.de/url/b1762d9edf72e6df9658208e17029874/stumme},
   keywords    = {everyaware geo geolocation twitter},
   added-at    = {2009-09-02T15:21:48.000+0200},
   description = {},
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   intrahash   = {b1762d9edf72e6df9658208e17029874}
}

@electronic{www.twittermap.de,
   title       = {twittermap - Who twitters where}, 
   url         = {http://www.twittermap.de/},
   biburl      = {https://puma.uni-kassel.de/url/db13e5c6b8f4af36a9efe1a87a90817d/stumme},
   keywords    = {everyaware geo geolocation location map twitter},
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   description = {},
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   intrahash   = {db13e5c6b8f4af36a9efe1a87a90817d}
}

@electronic{www.gps-mate.de,
   title       = {ConfiTek Ingenieur-Büro L. Oestreicher - Produkte - GPS-Mate}, 
   url         = {http://www.gps-mate.de/de/produkte/GPS-Mate/index.php},
   biburl      = {https://puma.uni-kassel.de/url/00623f7de6b92820e2d641240c2b7372/stumme},
   keywords    = {everyaware geo gpsmate osm},
   added-at    = {2009-09-04T11:41:00.000+0200},
   description = {},
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   intrahash   = {00623f7de6b92820e2d641240c2b7372}
}

@electronic{www.geocaching.com,
   title       = {Geocaching - The Official Global GPS Cache Hunt Site}, 
   url         = {http://www.geocaching.com/default.aspx},
   biburl      = {https://puma.uni-kassel.de/url/3844b8520cd1ffb8cf423800b608ce07/stephandoerfel},
   keywords    = {geo geocaching gps},
   added-at    = {2010-05-03T19:47:07.000+0200},
   description = {Geocaching is a treasure hunting game where you use a GPS to hide and seek containers with other participants in the activity. Geocaching.com is the listing service for geocaches around the world.},
   interhash   = {3844b8520cd1ffb8cf423800b608ce07}, 
   intrahash   = {3844b8520cd1ffb8cf423800b608ce07}
}

@electronic{www.geocaching.com,
   title       = {Geocaching > Geocaching Maps}, 
   url         = {http://www.geocaching.com/map/default.aspx},
   biburl      = {https://puma.uni-kassel.de/url/4ef953f089a0fcb75be48bbec0b5dc49/stephandoerfel},
   keywords    = {geo geocaching gps},
   added-at    = {2010-05-03T19:51:35.000+0200},
   description = {Geocaching is a treasure hunting game where you use a GPS to hide and seek containers with other participants in the activity. Geocaching.com is the listing service for geocaches around the world.},
   interhash   = {4ef953f089a0fcb75be48bbec0b5dc49}, 
   intrahash   = {4ef953f089a0fcb75be48bbec0b5dc49}
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@electronic{www.geocaching.com,
   title       = {GeoCaching Kassel}, 
   url         = {http://www.geocaching.com/map/default.aspx?lat=51.318928&lng=9.49601&zm=13&mt=m},
   biburl      = {https://puma.uni-kassel.de/url/e4f9dc76b8beff00593bd0e40b09a259/stephandoerfel},
   keywords    = {caching geo geocaching kassel maps},
   added-at    = {2010-06-10T21:13:03.000+0200},
   description = {Geocaching is a treasure hunting game where you use a GPS to hide and seek containers with other participants in the activity. Geocaching.com is the listing service for geocaches around the world.},
   interhash   = {e4f9dc76b8beff00593bd0e40b09a259}, 
   intrahash   = {e4f9dc76b8beff00593bd0e40b09a259}
}

@electronic{zonetag.research.yahoo.com,
   title       = {ZoneTag Photos}, 
   url         = {http://zonetag.research.yahoo.com/},
   biburl      = {https://puma.uni-kassel.de/url/e09220d1fe2cc1fe727b6041fb530289/benz},
   keywords    = {auto-tagging flickr geo location photos pictures recommender tag_recommender tagging upload zonetag},
   added-at    = {2011-02-04T16:07:34.000+0100},
   description = {},
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   intrahash   = {e09220d1fe2cc1fe727b6041fb530289}
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@electronic{appunta.com,
   title       = {What’s Appunta? | Appunta}, 
   url         = {http://appunta.com/sample-page/},
   biburl      = {https://puma.uni-kassel.de/url/ee4b6a6af2f28a7f2647b455ff84e35a/hotho},
   keywords    = {android data framework geo software tools visualization},
   added-at    = {2012-04-24T16:14:10.000+0200},
   description = {Appunta is a Framework for the Android platform that allows us not only to easily show geopositional information to the user, but also to create new ways of showing this information or modifying the existing ones.  Basically, you have a set of POI (Points Of Interest) located in a map (thus, with a latitude, longitude, and optionally, an altitude), and you need to show these POI and their related information to the user.  Appunta allows you, out of the box, to represent this information in two different ways, a radar or an augmented reality view. But, you can modify these components to show data in other ways or create new ways of visualizing this information.  Appunta is Open Source and anybody can freely use it. So, what are you waiting for?},
   interhash   = {ee4b6a6af2f28a7f2647b455ff84e35a}, 
   intrahash   = {ee4b6a6af2f28a7f2647b455ff84e35a}
}

@electronic{www.geofabrik.de,
   title       = {GEOFABRIK // Presse}, 
   url         = {http://www.geofabrik.de/geofabrik/press.html},
   biburl      = {https://puma.uni-kassel.de/url/817299928aebb5c632785f25ed8efea1/stumme},
   keywords    = {geo map osm},
   added-at    = {2012-09-21T11:26:20.000+0200},
   description = {},
   interhash   = {817299928aebb5c632785f25ed8efea1}, 
   intrahash   = {817299928aebb5c632785f25ed8efea1}
}

@electronic{www.microm-online.de,
   title       = {Sinus-Milieus | Sinus-Studie-Milieus: microm Consumer Marketing}, 
   url         = {http://www.microm-online.de/zielgruppe/strategische-zielgruppen/microm-geo-milieusr/},
   biburl      = {https://puma.uni-kassel.de/url/28efa9ff442921fc84a0a649d539a3ff/stumme},
   keywords    = {Geo Microm Milieu Sinus Studie},
   added-at    = {2015-05-26T17:41:11.000+0200},
   description = {},
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}