1. Measuring emotions: the self-assessment mankind and the semantic differential;Bradley;Journal of Behavior Therapy and Experimental Psychiatry,1994
2. Beyond boredom and anxiety: Experiencing flow in work and play;Csikszentmihalyi,1975
3. Flow: The psychology of optimal experience;Csikszentmihalyi,1990
4. Descartes’ error: Emotion, reason and the brain;Damasio,1994
5. Modernization and the changing contexts of flow in work and leisure;Delle Fave,1988