Okeke, O. C., I. J. Mgbeafulike, C. P. Uba, and I. C. Ugbor. “A Survey of the Availability and Suitability of Mobile Applications for Digital-Skills Learning Among Older Adults in Nigeria”. IPS Journal of Physical Sciences, vol. 3, no. 1, Mar. 2026, pp. 141-6, doi:10.54117/ijps.v3i1.21.