abdul hafizh mohd azam, muhamad rias k. v. zainuddin, nur fadhlina zainal abedin, nurhanani aflizan mohamad rusli.  (2022).  impact of exchange rate volatility on trade balance in malaysia.  - journal of asian finance, economics and business.  49-59. 

norlee ramli, abdul hafzh mohd azam, abu hassan shaari md nor, tamat sarmidi.  (2022).  spillover of rubber prices volatility in asean-3 countries.  - journal of rubber research.  251-263. 

tamat sarmidi, abdul hafizh mohd azam, abu hassan shaari md nor, kalsom zakaria.  (2022).  the role of palm oil in stabilising the price of vegetable oil market: empirical evidence using mgarch approach.  - journal of sustainability science and management.  19-31.