Ashraf, A. ., Zhu, X. ., Liu, J. ., & Rauf, Q. . (2020). A Systematic Review of Usability Engineering Management Studies for the Aging Population-UEM4Aging. International Journal of Sciences: Basic and Applied Research (IJSBAR), 50(2), 190–214. Retrieved from https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/11008