Zangana, Dhiaadin Bahaadin Noory. “The Effect of Reinforcement Density on The Deflection of Reinforced Soil Retaining Wall”. Nahrain University College of Engineering Journal, vol. 11, no. 3, Mar. 2008, pp. 374-81, https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/533.