WebCat Reading list
http://web-cat.cs.vt.edu/WCWiki/ReadingList

CAT Central
http://www.psych.umn.edu/psylabs/catcentral/

Web based language testing, di C. Roever
http://llt.msu.edu/vol5num2/pdf/roever.pdf

Computer Adaptive Testing Tutorial
http://edres.org/scripts/cat/catdemo.htm

Computer Adaptive Testing FAQ
http://www.carla.umn.edu/assessment/CATfaq.html

Computer based TOEFL
http://www.computerbasedtest.com/toefl_general.html

DIALANG
http://www.dialang.org/italian/index.htm