de Souza, P. V. D., Koller, O. C., Schwarz, S. F., & Barradas, C. I. N. (1993). Influency of etephon concentration and spraying pressure on the amount of reserve substances in tangerines ’Montenegrina’. Pesquisa Agropecuaria Brasileira, 28(5), 613–619. https://doi.org/10.1590/S1678-3921.pab1993.v28.3917