@electronic{ontoworld.org,
   title       = {Semantic Web Topic Hierarchy - Ontoworld.org}, 
   url         = {http://ontoworld.org/wiki/Semantic_Web_Topic_Hierarchy},
   biburl      = {https://puma.uni-kassel.de/url/218e2c885bfedbdfc59aa9f6b3562397/hotho},
   keywords    = {hierarchy semantic topic web wiki},
   added-at    = {2007-09-07T10:38:34.000+0200},
   description = {},
   interhash   = {218e2c885bfedbdfc59aa9f6b3562397}, 
   intrahash   = {218e2c885bfedbdfc59aa9f6b3562397}
}

@electronic{wiki.ontoworld.org,
   title       = {Semantic Web Topic Hierarchy - Ontoworld.org}, 
   url         = {http://wiki.ontoworld.org:80/index.php/Semantic_Web_Topic_Hierarchy},
   biburl      = {https://puma.uni-kassel.de/url/1ef705eb1e8a667f59d0cf1bbe4e2141/hotho},
   keywords    = {web 2.0 hierarchy topic wiki semantic},
   added-at    = {2006-12-06T14:45:53.000+0100},
   description = {Semantic Web Topic Hierarchy},
   interhash   = {1ef705eb1e8a667f59d0cf1bbe4e2141}, 
   intrahash   = {1ef705eb1e8a667f59d0cf1bbe4e2141}
}