Silva, Jennifer Figueiredo da, et al. “Morphogenic, Structural, and Productive Characteristics of Cenchrus Ciliaris L. Grown Using Different Levels of Caprine and Ovine Biofertilize”. Semina: Ciências Agrárias, vol. 38, no. 1, Mar. 2017, pp. 355-68, doi:10.5433/1679-0359.2017v38n1p355.