Tuncer, A., T. Maden, T. Badat, and D. Kocamaz. “The Effects of 5x5 Exercises on a Quality of Life of University Students, Who Use Smartphones During Long Periods”. Physical Education of Students, vol. 24, no. 5, Oct. 2020, pp. 271-7, doi:10.15561/20755279.2020.0503.