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 3, no. 2 (April 8, 2024). Accessed December 22, 2024. http://journals.sjp.ac.lk/index.php/ait/article/view/7351.