Toth, T., Kertész, M., Catasús Guerra, L., Labrada Labrada, J., Pérez Machado, B., Castillo Fonseca, P. and Nieto Martínez, M. 1997. Plant composition of a pasture as a predictor of soil salinity. Revista de Biología Tropical. 45, 4 (Dec. 1997), 1385–1393.