Roslan, M. A. H., N. Abdullah, and S. Mustafa. “Removal of Shells in Palm Kernel Cake via Static Cling and Electrostatic Separation”. Journal of Biochemistry, Microbiology and Biotechnology, vol. 3, no. 1, Oct. 2015, pp. 1-6, doi:10.54987/jobimb.v3i1.227.