@electronic{www.wiso-net.de,
   title       = {Neues wiso}, 
   url         = {http://www.wiso-net.de/IV_neu_PMGC.htx},
   biburl      = {https://puma.uni-kassel.de/url/883cbea8b2b41b33083b85057df6cf24/stumme},
   keywords    = {Volltext ct fulltext heise online zeitschrift zeitung},
   added-at    = {2008-01-15T11:39:47.000+0100},
   description = {},
   interhash   = {883cbea8b2b41b33083b85057df6cf24}, 
   intrahash   = {883cbea8b2b41b33083b85057df6cf24}
}

@electronic{www.springerexemplar.com,
   title       = {Springer Exemplar: Search Results}, 
   url         = {http://www.springerexemplar.com/search.aspx?q=%22formal%20concept%20analysis%22},
   biburl      = {https://puma.uni-kassel.de/url/8004ed9b2c54f4e3fbb8a27db16cce32/stumme},
   keywords    = {literatur springer springerexemplar suche volltext volltextsuche},
   added-at    = {2010-10-08T20:38:10.000+0200},
   description = {},
   interhash   = {8004ed9b2c54f4e3fbb8a27db16cce32}, 
   intrahash   = {8004ed9b2c54f4e3fbb8a27db16cce32}
}