P.P. Dharmaratne, W.M.U.K. Rathnayake, A.D.A.J.K. Weerasinghe, and A.S.A. Salgadoe. “Performance of UAV-Derived Normalized Difference Vegetation Index (NDVI) for Early Estimation of Rice Yield”. Advances in Technology, vol. 3, no. 2, Apr. 2024, doi:10.31357/ait.v3i2.7351.