@Misc{RSX11,
  author = 	 { Ronald L. Rivest and Emily Shen and Lirong Xia },
  title = 	 { Complexity of Computing the Margin of Victory for Various Voting Rules },
  howpublished = { Poster session at First Cambridge Area Economics and Computation Day },
  date =         { 2011-11-18 },                  
  OPTmonth = 	 { November 18, },
  OPTyear = 	 { 2011 },
  eventtitle =   { CAEC'11 },
  eventdate =    { 2011-11-18 },
  venue =        { Cambridge, Massachusetts },
  urla =         { <a href="http://caec.seas.harvard.edu/">CAEC'11</a> },
}