Toneatti-Bastidas, M., and J. Roger-Estrade. 2015. “Recovering Fertility of Acidic Volcanic Ash Soils in the Araucania Region (South Chile): Impacts of Liming, Grassland Composition, and P Fertilisation”. Agro Sur 43 (2):3-9. https://doi.org/10.4206/agrosur.2015.v43n2-02.