@TechReport{msclch06icfpc,
  author = 	 {Tom {Murphy VII} and Daniel Spoonhower and Chris Casinghino and Daniel R. Licata and Karl Crary and Robert Harper},
  title = 	 {The Cult of the Bound Variable: The 9$^{th}$ Annual ICFP Programming Contest},
  institution =  {Department of Computer Science, Carnegie Mellon University},
  year = 	 {2006},
  number = 	 {CMU-CS-06-163},
}