F. Ubi, J. Kajang, F. Ahakiri, V. Mbaze-Ebock, and I. Eja, “From Smart Tools to Superior Satisfaction: Examining the Role of Digital Innovation Variety in Enhancing Service Delivery Outcomes in Hotels”, TJESDS, vol. 2, no. 1, pp. 474–506, Jun. 2026, doi: 10.60787/tjesds.vol2no1.112.