E. A. Yakin, Z. Bachruddin, R. Utomo, and R. Millati, “Effect of Manganese (Mn2+) Addition on Cocoa Pod Fermentation with Phanerochaete chrysosporium”, Pak. J. Nutr., vol. 16, no. 7, pp. 508–513, Jun. 2017, doi: 10.3923/pjn.2017.508.513.