C. A. C. Crusciol, M. S. do Nascimento, A. M. Fernandes, and M. D. Zanotto, “Nutrients extraction and exportation by Savana castor bean hybrid: II – Micronutrients”, Semina: Ciênc. Agrár., vol. 33, no. 6Supl1, pp. 2637–2656, Dec. 2012.