[1]
M. de A. Lira, I. Farias, A. de P. M. Fernandes, L. M. Soares, and J. C. B. Dubeux Junior, “Nitrogenous and phosphatic fertilization effects on elephant grass (<i>Pennisetum purpureum</i>, Schum.) productivity”, PAB, vol. 31, no. 1, pp. 19–26, Jan. 1996.