Reyhan, M.K., and F. Amiraslani. “Studying the Relationship Between Vegetation and Physico-Chemical Properties of Soil, Case Study: Tabas Region, Iran”. Pakistan Journal of Nutrition, vol. 5, no. 2, Feb. 2006, pp. 169-71, https://doi.org/10.3923/pjn.2006.169.171.