1. T. P. Trinidad, "Health benefits from coco sap-based products," Food and Nutrition Research Institute, Department of Science and Technology. Retrieved 15 April 2016 from Philippine Coconut Authority website: http://www.pca.da.gov.ph.
2. P. Thampan, "Production of Neera and coconut sugar deserves encouragement," Indian Coconut Journal, pp. 11--14, 2013.
3. H. Purnomo, "Volatile components of coconut fresh sap, sap syrup and coconut sugar," ASEAN Food Journal, vol. 14, no. 1, pp. 45--49, 2007.
4. D. Masa, "Coco sugar: current processing, technologies, utilization and recommended practices," in Coco Sugar Congress, Davao, 2012.
5. I. M. Mancini, S. Masi, D. Caniani and D. S. Lioi, "Fuzzy logic and neuro-fuzzy networks for environmental hazard assessment," Fuzzy Logic -- Emerging Technologies and Applications, E. P. Dadios, pp. 65--82, 2012.