I added a report from The Aeronautical Research Institute of Sweden on their FFA-Wl-xxx, FFA-W2-xxx and FFA-W3-xxx Series of Airfoils to our Airfoils web site. You can find the report here:
[url]http://wind.nrel.gov/airfoils/Documents/FFA%20TN%201990-15%20v.1-2%20c.1.pdf[/url]