@electronic{www-307.ibm.com,
   title       = {Lenovo Support & downloads - ThinkVantage System Update 4.0}, 
   url         = {http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=TVSU-UPDATE},
   biburl      = {https://puma.uni-kassel.de/url/b26670388ff875735fc155e29d4c0116/hotho},
   keywords    = {support system thinkpad update windows7},
   added-at    = {2009-10-29T21:41:10.000+0100},
   description = {ThinkVantage System Update 4.0},
   interhash   = {b26670388ff875735fc155e29d4c0116}, 
   intrahash   = {b26670388ff875735fc155e29d4c0116}
}