Cognitive Flexibility, Constructivism, and Hypertext: Random Access Instruction for Advanced Knowledge Acquisition in Ill-Structured Domains
http://www.ilt.columbia.edu/publications/papers/Spiro.html

Seeing Multiple Perspectives: Teaching Complex Issues with Cognitive Flexibility and Hypertext
http://loki.stockton.edu/~teaching/powerpoint/harvey.ppt

Cognitive Flexibility Theory: Implications for Teaching and Teacher Education
http://www.kdassem.dk/didaktik/l4-16.htm

Hypertext Learning Environments, Cognitive Flexibility, and the Transfer of Complex Knowledge: An Empirical Investigation
http://www.edb.utexas.edu/mmresearch/Students96/McManus/cftstudy.html