M. J. T. Dias, H. A. de Souza, W. Natale, V. C. Modesto, and D. E. Rozane, “Fertilization with nitrogen and potassium in guava seedlings in a commercial nursery”, Semina: Ciênc. Agrár., vol. 33, no. 6Supl1, pp. 2837–2848, Dec. 2012.