S. R. de Carvalho, A. T. da Silva, F. A. Costa, S. M. Souto, and E. D. de Lucas, “Effects of irrigation and soil fertilization on two cultivars of elephantgrass ( Pennisetum purpureum)”, PAB, vol. 10, no. 4, pp. 23–30, Apr. 2014, doi: 10.1590/S1678-3921.pab1975.v10.17071.