Tossell, Chad, Philip Kortum, Clayton Shepard, Ahmad Rahmati, and Lin Zhong. 2015. “Exploring Smartphone Addiction: Insights from Long-Term Telemetric Behavioral Measures”. International Journal of Interactive Mobile Technologies (iJIM) 9 (2):pp. 37-43. https://doi.org/10.3991/ijim.v9i2.4300.