@TechReport{	  dashti:accountability:2010,
  address	= {Zurich},
  author	= {Mohammad Torabi Dashti},
  institution	= {ETH},
  language	= {USenglish},
  month		= {December},
  number	= 701,
  title		= { Accountability in optimistic non-repudiation protocols},
  url		= {http://www.inf.ethz.ch/research/disstechreps/techreports/show?serial=701&lang=en}
		  ,
  year		= 2010,
  user		= {torabidm}
}