@electronic{code.google.com,
   title       = {Page Speed Home}, 
   url         = {http://code.google.com/intl/de-DE/speed/page-speed/},
   biburl      = {https://puma.uni-kassel.de/url/0076652eadcbbf8dc0d00589c9838d20/benz},
   keywords    = {addon chrome firefox optimierung pagespeed plugin website},
   added-at    = {2011-03-24T23:23:07.000+0100},
   description = {Page Speed is an open-source project started at Google to help developers optimize their web pages by applying web performance best practices.},
   interhash   = {0076652eadcbbf8dc0d00589c9838d20}, 
   intrahash   = {0076652eadcbbf8dc0d00589c9838d20}
}

@electronic{addons.mozilla.org,
   title       = {Screengrab! :: Firefox Add-ons}, 
   url         = {https://addons.mozilla.org/de/firefox/addon/1146},
   biburl      = {https://puma.uni-kassel.de/url/fc374570dbb6d8bf994a3a4a494d15a3/benz},
   keywords    = {addon firefox screenshot website},
   added-at    = {2011-02-04T16:09:06.000+0100},
   description = {Screengrab saves entire webpages as images.It will save what you can see in the window, the entire page, just a selection, a particular frame... basically it saves webpages as images.},
   interhash   = {fc374570dbb6d8bf994a3a4a494d15a3}, 
   intrahash   = {fc374570dbb6d8bf994a3a4a494d15a3}
}