Oliveira, F.T.T. de et al. (2014) “Effect of lime, potassium, sulfur and micronutrients on the growth of Centrosema pubescens in acid soil”, Pesquisa Agropecuaria Brasileira, 20(7), pp. 755–759. doi:10.1590/S1678-3921.pab1985.v20.15787.