de Oliveira, P.R.D., Paim, N.R. and Czermainski, A.B.C. (1993) “Selection for forage yield and quality in Crioula alfafa”, Pesquisa Agropecuaria Brasileira, 28(9), pp. 1039–1044. doi:10.1590/S1678-3921.pab1993.v28.3968.