Schultze-Kraft, R., I. M. Rao, M. Peters, R. J. Clements, C. Bai, and G. Liu. “Tropical Forage Legumes for Environmental Benefits: An Overview”. Tropical Grasslands-Forrajes Tropicales, vol. 6, no. 1, Jan. 2018, pp. 1-14, doi:10.17138/tgft(6)1-14.