“Assessment of Vegetal Cover Changes Using Normalized Difference Vegetation Index (NDVI) and Subtractive (NDVI) Time-Series, Karbala Province, Iraq”. Iraqi Journal of Physics 15, no. 35 (October 2, 2018): 133–141. Accessed May 20, 2024. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/62.