Andrade, V. M. D.; Lourenço, R. S.; Muraoka, T.; Malavolta, E. Studies on the Mineral Nutrition of the Coffee Plant: XXXI. Influence of Copper in the Substrate on Growth and Mineral Composition of the Coffee Plant Varieties Mundo Novo and Catuaí . An. Esc. Super. Agr. Luiz de Queiroz 1976, 33, 459-469. https://doi.org/10.1590/S0071-12761976000100042.