C. M. M. de S. Silva and C. M. B. de Faria, “Behavior of tropical forage legumes under different fertilization in Petrolina, Pernambuco, Brazil”, PAB, vol. 24, no. 11, pp. 1319–1323, Apr. 2014, doi: 10.1590/S1678-3921.pab1989.v24.16515.