@electronic{esta.cbp.dhs.gov,
   title       = {Welcome to ESTA - the Official U.S. Government Web Site}, 
   url         = {https://esta.cbp.dhs.gov/esta/esta.html?_flowExecutionKey=_cA04EC0B9-7B86-F0E5-600D-24ADB92DCEF6_k888FC064-48B4-2178-DE03-58B7B7731C47},
   biburl      = {https://puma.uni-kassel.de/url/c48d7c5671ff52a41924d455f4f079df/benz},
   keywords    = {amerika einreise esta registrieren reise us usa},
   added-at    = {2011-02-04T16:07:31.000+0100},
   description = {},
   interhash   = {c48d7c5671ff52a41924d455f4f079df}, 
   intrahash   = {c48d7c5671ff52a41924d455f4f079df}
}