@article{Hudak89,
  author = "Hudak, Paul",
  title = "{Conception, evolution, and application of functional programming languages}",
  journal = "ACM Computing Surveys",
  volume = "21",
  number = "3",
  pages = "359-411",
  month = "Sep.",
  year = "1989",
  url = "http://www.cs.berkeley.edu/~jcondit/pl-prelim/hudak89functional.pdf",
}