Smartwatch Wearing Behavior Analysis: A Longitudinal Study. - Hayeon Jeong; Heepyung Kim; Rihun Kim; Uichin Lee; Yong Jeong (Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2017)

Understanding smartphone usage in college classrooms: A long-term measurement study. - Inyeop Kim; Rihun Kim; Heepyung Kim; Duyeon Kim; Kyungsik Han; Paul H. Lee; Gloria Mark; Uichin Lee (Comput. Educ., 2019)