D. G. Bonini Bitencourt, L. C. Timm, E. C. Guimarães, L. F. S. Pinto, E. A. Pauletto, and L. H. Penning, “Spatial variability structure of the surface layer attributes of gleysols from the coastal plain of Rio Grande do Sul ”, Biosci. J., vol. 31, no. 6, pp. 1711–1721, Nov. 2015.