Phontusang, P., R. Katawatin, K. Pannangpetch, R. Lerdsuwansri, and S. Kingpaiboon. 2017. “Sampling Strategies for Geostatistical Analyses of Field-Scale Spatial Variability of Electrical Conductivity in Inland Salt-Affected Soils”. International Journal of Geoinformatics 13 (2). https://ijg.e-geoinfo.com/index.php/journal/article/view/1036.