1. Global mobile statistics 2013 section E: Mobile apps, app stores, pricing and failure rates;mobiForge.com,2013
2. The importance of challenge for the enjoyment of intrinsically motivated, goal-directed activities;Abuhamdeh;Personality and Social Psychology Bulletin,2012
3. Enjoying the possibility of defeat: Outcome uncertainty, suspense, and intrinsic motivation;Abuhamdeh;Motivation and Emotion,2015
4. Birth, life and death of an app - a look at the apple app store in July 2014;Adjust,2014
5. Extrinsic versus intrinsic motivation in continued twitter usage;Agrifoglio;Journal of Computer Information Systems,2012