Siqueira, R., et al. “Plant Density, Pruning of the Lower Lateral Branches, and Production of Two Cultivars of <i>coffea Arabica<i\> And of Hybrid ’Icatu’”. Pesquisa Agropecuaria Brasileira, vol. 18, no. 7, Apr. 2014, pp. 763-9, doi:10.1590/S1678-3921.pab1983.v18.15358.