“ Bioevaluation of the nutritional status of rice (Oriza sativa L. cv. IAC-165) and bean (Phaseolus vulgaris L. cv. carioca) plants using 15N and 32P ”, Sci. agric., vol. 51, no. 3, pp. 393–398, Dec. 1994, doi: 10.1590/S0103-90161994000300002.