S. Cietto, H. P. Haag, and A. R. Dechen, “ N, P and K storage by coffee plants (Cofeea arabica L. cv. Catuai) with two, three, four and five years old growing on a red-yellow latossol (ustoc) ”, An. Esc. Super. Agr. Luiz de Queiroz, vol. 48, pp. 245–268, Jan. 1991, doi: 10.1590/S0071-12761991000100014.