1. KidReporter: a user requirements gathering technique for designing with children;Bekker;Interacting with Computers,2003
2. Bills, D.B., 2003. Schooling Without Credentials The Participation of Adults in Personal Development Courses. ISA Research Committee on Social Stratification and Mobility, University of Iowa, New York.
3. Violent video games and hostile expectations: a test of the general aggression model;Bushman;Personality and Social Psychology Bulletin,2002
4. Flow: The Psychology of Optical Experience;Csikszentmihaly,1990