1. 1. Liu Feng, Yong Shi. The Search Engine IQ Test based on the Internet IQ Evaluation Algorithm, Proceedings of the Secondi. International Conference on Information Technology and Quantitative Management, Procedia Computer Science, Volume 31, 2014, Pages 1066-1073.
   2. Liu Feng, Yong Shi, and Bo Wang. World Search Engine IQ Test Based on the Internet IQ Evaluation Algorithms. International Journal of Information Technology & Decision Making.2015 3(1)
   3. Y. Aguiar, M. Vieira, E. Galy, J. Mercantini, and C. Santoni, “Refining a user behavior model based on the observation of emotional states,” in Proc. COGNITIVE, 2011, pp. 36–40.
   4. R. Dickerson, E. Gorlin, and J. Stankovic, “Empath: A continuous remote emotional health monitoring system for depressive illness,” in Proc. Wireless Health, 2011. 
   5. Bar-On, R. (2006), "The Bar-On model of emotionalsocial intelligence (ESI)," Psicothema, 18, supl., 13-25.