Fageria, N. K., Baligar, V. C. and Wright, R. J. (2014) “Iron nutrition of plants: an overview on the chemistry and physiology of its deficiency and toxicity”, Pesquisa Agropecuaria Brasileira, 25(4), pp. 553–570. doi: 10.1590/S1678-3921.pab1990.v25.13454.