Firmanto, H., E. Suharyanto, and . Kuswanto. “Performance of Cooled Cone Grinding Machine in Cocoa Cake Processing”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 31, no. 2, Aug. 2015, pp. 119-2, doi:10.22302/iccri.jur.pelitaperkebunan.v31i2.152.