P. M. da Silveira, A. J. B. P. Braz, H. J. Kliemann, and F. J. P. Zimmermann, “NUTRIENT ACCUMULATION IN PIGEON PEA AND STYLO LEAF BLADE”, Pesq. Agropec. Trop., vol. 35, no. 3, pp. 133–138, Oct. 2007, doi: 10.5216/pat.v35i3.2213.