@phdthesis{Vis97.thesis,
  author     = {Visser, Eelco},
  title      = {Syntax Definition for Language Prototyping},
  year       = {1997},
  month      = {September},
  school     = {University of Amsterdam},
  url        = {http://swerl.tudelft.nl/bin/view/EelcoVisser/SyntaxDefinitionForLanguagePrototyping},
  urlps      = {http://www.st.ewi.tudelft.nl/~eelco/papers/Vis97.ps},
  pubcat     = {phdthesis},
  project    = {ASF+SDF and SDF},
  category   = {key and refereed},
  supervisor = {Paul Klint},
}