Pancaningtyas, S. (2012) “Effectiveness of calcium chloride in reduction of shoot necrosis incocoa (Theobroma cacao L.) in vitro propagation”, Pelita Perkebunan (a Coffee and Cocoa Research Journal), 28(1), pp. 23-31. doi: 10.22302/iccri.jur.pelitaperkebunan.v28i1.161.