A. Jabbar, F. ., and A. . A .Jasim. “Effect of the Distance Between Irrigation Tubes in the Subsurface Drip Irrigation System on Rice Crop Production”. Journal of Water Resources and Geosciences, vol. 3, no. 2, Sept. 2024, pp. 1-17, https://jwrg.gov.iq/index.php/jwrg/article/view/117.