@book{SPT,
  author   = {Eelco Visser},
  title    = {Strategies for Program Transformation},
  year     = 2004,
  note     = {Draft book. Superseded by Stratego/XT manual.},
  urlinfo  = {http://www.stratego-language.org/Book},
  pubcat   = {draft},
  project  = {Stratego and XT},
  category = {ongoing and non-refereed},
}