@Unpublished{Riv01e,
  author = 	 { Ronald L. Rivest },
  title = 	 { Security in Voting Technology },
  date =         { 2001-05-24 },                  
  OPTyear = 	 { 2001 },
  OPTmonth = 	 { May 24, },
  note = 	 { Testimony given to U.S. Committee on House Administration May 24, 2001. },
}