1. On the cognitive process of human problem solving
2. P. C. Kyllonen. Invitational Researh Symposium on Technology Enhanced Assessments. 24, 5 (2012).
3. Cognitive Skill Analysis for Students through Problem Solving Based on Data Mining Techniques
4. S. M. Brookhart. How To Assess Higher-Order Thingking Skills in Your Classroom (ASCD, USA, 2010), pp. 98–100.
5. R. Foshay. Principles for Teaching Problem Solving (Plato Learning, India, 2003), p 3.