Rodrigo-Comino, J., A. Keshavarzi, A. Bagherzadeh, and E. Brevik. “The Use of Multivariate Statistical Analysis and Soil Quality Indices As Tools to Be Included in Regional Management Plans. A Case Study from the Mashhad Plain, Iran”. Cuadernos De Investigación Geográfica, vol. 45, no. 2, Sept. 2019, pp. 687-08, doi:10.18172/cig.3640.