Döbereiner, Jürgen, et al. “‘Cara Inchada’ (periodontal Disease) in Calves Kept on Panicum Maximum Pastures”. Pesquisa Agropecuaria Brasileira, vol. 11, no. 9, Apr. 2014, pp. 43-47, https://doi.org/10.1590/S1678-3921.pab1976.v11.17004.