Hatzigiannakoglou, Paul D, and Areti Okalidou. “Development of an Auditory Rehabilitation Tool for Children With Cochlear Implants through a Mobile-Based VR and AR Serious Game”. International Journal of Online and Biomedical Engineering (iJOE), vol. 15, no. 02, Jan. 2019, pp. pp. 81-90, doi:10.3991/ijoe.v15i02.9709.