P. PHONTUSANG, R. KATAWATIN, K. PANNANGPETCH, R. LERDSUWANSRI, S. KINGPAIBOON, and K. WONGPICHET, “Field-scale Spatial Variability of Electrical Conductivity of the Inland, Salt-affected Soils of Northeast Thailand”, Walailak J Sci & Tech, vol. 15, no. 5, pp. 341–355, Oct. 2017.