...

I would add some significant papers, such as John Hughes' "Why functional programming matters", etc.

I've added that paper to the introduction. Other suggestions are welcome.

"Conception, Evolution, and Application of Functional Programming Languages", Paul Hudak, ACM Computing Surveys, Volume 21, Number 3, pp.359-411, 1989 This would probably be good, too. --Matthew Donadio (m.p.donadio@ieee.org)