@electronic{www.google.de,
   title       = {Google}, 
   url         = {http://www.google.de},
   biburl      = {https://puma.uni-kassel.de/url/108eca7b644e2c5e09853619bc416ed0/stephandoerfel},
   keywords    = {tag1 tag2 tag3},
   added-at    = {2012-02-29T17:20:32.000+0100},
   description = {},
   interhash   = {108eca7b644e2c5e09853619bc416ed0}, 
   intrahash   = {108eca7b644e2c5e09853619bc416ed0}
}