@electronic{xkcd.com,
   title       = {xkcd - A webcomic of romance, sarcasm, math, and language - By Randall Munroe}, 
   url         = {http://xkcd.com/c256.html},
   biburl      = {https://puma.uni-kassel.de/url/1a1413b1888992465d1d27b97e6921e6/hotho},
   keywords    = {2.0 cartoon community fun map online picture web},
   added-at    = {2007-05-12T22:25:07.000+0200},
   description = {},
   interhash   = {1a1413b1888992465d1d27b97e6921e6}, 
   intrahash   = {1a1413b1888992465d1d27b97e6921e6}
}