Literatur

1: Report on the Programming Language Haskell, Version 1.3, May 1, 1996
2: Monadic Parser Combinators, Graham Hutton, Erik Maijer, J. Functional Programming 1 (1):1-000, January 1993, Cambridge University Press
3: Andy Gill and Simon Marlow, Happy Manual, Second Edition, Happy version 0.8, January 1995