There are many introductory Haskell books, but i was (at the time i started learning) keen of those providing also a good basis on functional programming (which was a totally new world for me at the time). ...
M. Simkin, and V. Roychowdury. Journal of the American Society for Information Science & Technology, 58 (11):
1661-1673(September 2007)IL: 3 charts, 1 diagram, 2 graphs.
J. Puškarić. Zbornik Odsjeka za povijesne znanosti Zavoda za povijesne i društvene znanosti Hrvatske akademije znanosti i umjetnosti, (Prosinac 2006)Postoji i engleska verzija / English version available on Hrcak..