@techreport{WV03,
  author      = {{\sortunder{Wijngaarden}}van Wijngaarden, Jonne and Eelco Visser},
  title       = {Program Transformation Mechanics. A Classification of Mechanisms for Program Transformation with a Survey of Existing Transformation Systems.},
  institution = {Institute of Information and Computing Sciences, Utrecht University.},
  year        = 2003,
  number      = {UU-CS-2003-048},
  month       = {May},
  url         = {http://www.cs.uu.nl/research/techreps/UU-CS-2003-048.html},
  urlpdf      = {http://www.cs.uu.nl/research/techreps/repo/CS-2003/2003-048.pdf},
  urlinfo     = {http://www.program-transformation.org/Transform/TransformationMechanics},
  pubcat      = {techreport},
  project     = {Stratego},
  category    = {non-refereed},
}