Fernandes, Mário Bezerra, et al. “Evaluation of Forage Sorghum Cultivars in Salt Affected Soils of Rio Grande Do Norte, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 29, no. 2, Feb. 1994, pp. 255-62, doi:10.1590/S1678-3921.pab1994.v29.4050.