GUNARATNE, G P, NILWALA KOTTEGODA, NADEESH MADUSANKA, IMALKA MUNAWEERA, CHANAKA SANDARUWAN, W M G I PRIYADARSHANA, ASITHA SIRIWARDHANA, B A D MADHUSHANKA, U A RATHNAYAKE, and VERANJA KARUNARATNE. 2016. “Two New Plant Nutrient Nanocomposites Based on Urea Coated Hydroxyapatite: Efficacy and Plant Uptake”. The Indian Journal of Agricultural Sciences 86 (4): 494–9. https://doi.org/10.56093/ijas.v86i4.57483.