Vu, T. C., T. H. Nguyen, M. D. Nguyen, D. T. Nguyen, T. V. Nguyen, L. Q. Dinh, and M. T. Nguyen. “Indoor Positioning Using Smartphones: An Improved Time-of-Arrival Technique”. Journal of Computing Theories and Applications, vol. 3, no. 1, July 2025, pp. 64-75, doi:10.62411/jcta.13305.