Maluf, H.J.G.M. et al. 2015. Soil fertility and nutritional status of coffee grown in CO2‑enriched atmosphere. Pesquisa Agropecuaria Brasileira. 50, 11 (Dec. 2015), 1087–1096. DOI:https://doi.org/10.1590/S1678-3921.pab2015.v50.21767.