Jefri Lim, A. D. L., and S. A. Abu Bakar. “Effects of Air Vortex Finder Length and Outlet Diameter Variations on Oil Palm Loose Fruit Collector”. Journal of Engineering Research and Education (JERE), vol. 16, Jan. 2025, pp. 76-87, doi:10.58915/jere.v16.2024.1514.