Zhou, Yuhan, and Abdul Manaf Bohari. “Developing A Theoretical Model for Adoption of Facial Recognition Payment for Senior Citizens in Tangshan City, Hebei, China”. International Journal of Innovative Research and Scientific Studies 8, no. 3 (May 6, 2025): 1102–1111. Accessed December 13, 2025. http://ijirss.com/index.php/ijirss/article/view/6760.