1. Measuring cognitive and psychological engagement: Validation of the Student Engagement Instrument
2. Ašeriškis , D. , & Damaševičius , R. ( 2014 , March). Gamification of a project management system . In Proc. of Int. Conference on Advances in ComputerHuman Interactions ACHI2014 (pp. 200-207 ). Ašeriškis, D., & Damaševičius, R. ( 2014, March). Gamification of a project management system. In Proc. of Int. Conference on Advances in ComputerHuman Interactions ACHI2014 (pp. 200-207 ).
3. Brooke J. ( 1996 ). SUS-A quick and dirty usability scale. Usability evaluation in industry 189 ( 194 ) 4-7. Brooke J. ( 1996 ). SUS-A quick and dirty usability scale. Usability evaluation in industry 189 ( 194 ) 4-7.
4. Csikszentmihalyi , M. Finding flow: The psychology of engagement with everyday life . Basic Books , 1997 . Csikszentmihalyi, M. Finding flow: The psychology of engagement with everyday life. Basic Books, 1997.
5. Cursino , R. , Ferreira , D. , Lencastre , M. , Fagundes , R. , & Pimentel , J. ( 2018 , September). Gamification in requirements engineering: a systematic review . In 2018 11th International Conference on the Quality of Information and Communications Technology (QUATIC) (pp. 119-125 ). IEEE. Cursino, R., Ferreira, D., Lencastre, M., Fagundes, R., & Pimentel, J. ( 2018, September). Gamification in requirements engineering: a systematic review. In 2018 11th International Conference on the Quality of Information and Communications Technology (QUATIC) (pp. 119-125 ). IEEE.