@electronic{twitter.com,
   title       = {Twitter: What are you doing?}, 
   url         = {http://twitter.com/},
   biburl      = {https://puma.uni-kassel.de/url/1cc089548931c4fe0463e7a98ec6078e/benz},
   keywords    = {networking online service twitter},
   added-at    = {2011-02-04T16:09:09.000+0100},
   description = {Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?},
   interhash   = {1cc089548931c4fe0463e7a98ec6078e}, 
   intrahash   = {1cc089548931c4fe0463e7a98ec6078e}
}

@electronic{publicationslist.org,
   title       = {PublicationsList.org - your academic publications list online with endnote, reference manager, bibtex and PubMed / MEDLINE ( NCBI, NLM, NIH ) import and export - improve impact factor and citations}, 
   url         = {http://publicationslist.org/},
   biburl      = {https://puma.uni-kassel.de/url/f2b0c24e4c6868e42de43cc706b7552d/benz},
   keywords    = {manager online references service},
   added-at    = {2011-02-04T16:09:08.000+0100},
   description = {},
   interhash   = {f2b0c24e4c6868e42de43cc706b7552d}, 
   intrahash   = {f2b0c24e4c6868e42de43cc706b7552d}
}

@electronic{www.semags.de,
   title       = {semags - synonyme / semantische tags suche}, 
   url         = {http://www.semags.de/},
   biburl      = {https://puma.uni-kassel.de/url/fdfb0561e187534f9118633a5eb83042/benz},
   keywords    = {online query_extension semantic semantics sematag service tag tool website},
   added-at    = {2011-02-04T16:07:33.000+0100},
   description = {},
   interhash   = {fdfb0561e187534f9118633a5eb83042}, 
   intrahash   = {fdfb0561e187534f9118633a5eb83042}
}