Mirnawati, Kompiang, I. P., Latif, S. A., & Latif, S. A. (2012). Effect of Substrate Composition and Inoculum Dosage to Improve Quality of Palm Kernel Cake Fermented by Aspergillus niger. Pakistan Journal of Nutrition, 11(5), 434–438. https://doi.org/10.3923/pjn.2012.434.438