Marinho, Cláudia Sales, Rosilene Ferreira Souto, and Fausto de Souza Sobrinho. 1993. “Influence of Thinning and Foliar Fertilization of ‘Pon Kan’ Tangerine Trees (Citrus Reticulata Blanco) on the Quality of the Fruits”. Pesquisa Agropecuaria Brasileira 28 (9): 1019-23. https://doi.org/10.1590/S1678-3921.pab1993.v28.3965.