@proceedings{alti:types06,
  editor    = {Thorsten Altenkirch and
               Conor McBride},
  title     = {Types for Proofs and Programs, International Workshop, TYPES
               2006, Nottingham, UK, April 18-21, 2006, Revised Selected
               Papers},
  booktitle = {TYPES},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {4502},
  year      = {2007},
}