@misc{Riv14b,
  author =       { Ronald L. Rivest },
  title =        { University of Waterloo Convocation Address (Faculty of Mathematics) },
  howpublished = { (LiveStream) },
  date =         { 2014-06-13 },
  OPTmonth =     { June 13, },
  OPTyear =      { 2014 },
  urla =         { <a href="http://new.livestream.com/itmsstudio/events/3067760">video</a> },
  urlb =         { <a href="#Riv14b>text(pdf)</a>},
}