@TECHREPORT{Briscoe08b:PCN-enc-3-in-1,
  author = {Bob Briscoe and Toby Moncaster and Michael Menth},
  title = {{Encoding Three Pre-Congestion Notification (PCN) States in the IP Header
	using a Single Diffserv Codepoint (DSCP)}{}},
  institution = ietf,
  year = {2012},
  type = rfc,
  number = {rfc6660},
  month = jul,
  abstract-url = {\url{http://www.bobbriscoe.net/pubs.html#PCN-enc-3-in-1}},
  affiliation = {1: BT; 2: Uni Cambridge; 3: Uni Tuebingen},
  keywords = {Data Communication, Networks, Internet, Quality of Service, QoS,
	Congestion Control, Differentiated Services, Admission Control, Protocols,
	Congestion Notification, Marking, Encoding},
  owner = {RJB},
  timestamp = {2008.10.27},
  url = {\href{http://tools.ietf.org/html/rfc6660}{rfc6660} \url{http://www.bobbriscoe.net/projects/ipe2eqos/pcn/rfc6660.txt}}
}