Silva, E. de B., Tanure, L. P. P., Santos, S. R., & Júnior, P. S. de R. (2010). Visual symptoms of nutrient deficiency in physic nut. Pesquisa Agropecuaria Brasileira, 44(4), 392–397. https://doi.org/10.1590/S1678-3921.pab2009.v44.1763