Pimenta, Carlos José, Silvio Julio de Resende Chagas, and Laerte Costa. 1997. “Polyphenoloxidase, Leaching of Potassium and Quality of Coffee Picked at Maturation Stages”. Pesquisa Agropecuaria Brasileira 32 (2):171-77. https://doi.org/10.1590/S1678-3921.pab1997.v32.4621.