Goshu, B. S. “Prevalence and Correlates of Problematic Smartphone Use Among Ethiopian Youth: A Multi-City Cross-Sectional Study in Addis Ababa, Hawassa, Bahir Dar, Dire Dawa, Harar, Jijiga, and Adama”. Matondang Journal, Vol. 6, no. 1, Aug. 2026, pp. 62-81, http://biarjournal.com/index.php/matondang/article/view/1599.