@misc{Riv15,
  author = 	 { Ronald L. Rivest },
  title = 	 { On the growth of cryptography },
  howpublished = { Talk given June 3, 2015 at Simons Institute Program in Cryptography (U.C. Berkeley),
                   Historical talk series },
  date =         { 2015-06-03 },                  
  urla =         { <a href="http://simons.berkeley.edu/crypto2015/historical-papers-seminar-series/Ron-Rivest-2015-06-03">video-and-slides</a> },
  OPTmonth = 	 { June 3, },
  OPTyear = 	 { 2015 },
}