Recommendation 14.3. Electoral Administration, paragraph 4 (Election Administration) Venezuela 2006
http://aceproject.org/ero-en/regions/americas/VE/venezuela-final-report-presidential-elections-eu/at_download/file
If the use of indelible ink is to be continued as one of the mechanisms to prevent double voting, it is recommended that the ink that is used be less easily erased, than that which was used for the 2006 Presidential Elections
