Dantas, J. P.; Bergamin Filho, H.; Malavolta, E. Studies on the Mineral Nutrition of Vigna Sinensis. V: A Key for the Identification of Symptoms of Deficiency of Macro and Micronutrients . An. Esc. Super. Agr. Luiz de Queiroz 1979, 36, 435-444. https://doi.org/10.1590/S0071-12761979000100024.