Barros, N.N. et al. (1992) “Comparative study with sheep and goats of the digestibility of a native legume in the semi-arid zone of Ceará, Brazil. II. In vivo digestibility of the silage of Cassia sp”., Pesquisa Agropecuaria Brasileira, 27(11), pp. 1551–1555. doi:10.1590/S1678-3921.pab1992.v27.3803.