Paim, N.R. and Riboldi, J. 1994. Two new white clover cultivars in comparison with others in associations with grasses, in Rio Grande do Sul, Southern Brazil. Pesquisa Agropecuaria Brasileira. 29, 1 (Jan. 1994), 01–91. DOI:https://doi.org/10.1590/S1678-3921.pab1994.v29.4025.