zhangwei zheng, hafizuddin-syah b.a.m, hafizah omar zaki, qin lingda tan.  (2026).  perceived aging risk and private medical insurance intentions: education, subjective health, and a china–malaysia comparison.  - frontiers in public health.  1 - 15. 

zhangwei zheng, hafizuddin-syah b.a.m, hafizah omar zaki, qin lingda tan.  (2025).  health insurance purchase intentions in the past decade: a systematic review and future research directions.  - bmc health services research.  1 - 17. 

wentao huang, mohd hafizuddin syah bangaan abdullah, mohd hasimi yaacob.  (2025).  the nexus of spending and saving decisions: a systematic literature review and bibliometric analysis.  - international journal of consumer studies.  1 - 28. 

zhangwei zheng, mohd hafizuddin syah bangaan abdullah, hafizah omar zaki, qin lingda tan.  (2025).  advancing marketing science through vroom's expectancy theory: a review and research agenda.  - international journal of consumer studies.  1 - 25. 

zhangwei zheng, hafizuddin-syah b. a. m., hafizah omar zaki, qin lingda tan.  (2025).  aging and its societal impact: a bibliometric analysis.  - sage open.  1 - 16. 

zhangwei zheng, hafizuddin-syah b.a.m, hafizah omar zaki, qin lingda tan.  (2024).  a scoping review of the impact of ageing on individual consumers’ insurance purchase intentions.  - heliyon.  1 - 12. 

zhangwei zheng, hafizuddin-syah b. a. m, hafizah omar zaki, qin lingda tan.  (2024).  impact of aging on consumer behavior: a review and research agenda.  - international journal of consumer studies.  1 - 17. 

shahida shahimi, hafizuddin-syah b.a.m, hanisah s.f.  (2023).  sustainability practices and financial profitability: the case of the worlds top 20 crude palm oil producers.  - sage open.  1-14.