Botrel, M. de A. and Alvim, M.J. 1992. Evaluations of elephant grass cultivars in two physiographic regions of Minas Gerais state, Brazil. Pesquisa Agropecuaria Brasileira. 27, 6 (Jun. 1992), 835–839. DOI:https://doi.org/10.1590/S1678-3921.pab1992.v27.3716.