dos Santos, M. V., dos Santos, R. J., Lira Jr., M. A., da Cunha, M. V., Dubeux Jr., J. C., de Souza, E. M., de Mello, A. C. and Teixeira, V. I. (2014) “Nitrogen fixation potential with <i>Macroptilium</i> of native rhizobial populations in semi-arid Pernambuco, Brazil”, Tropical Grasslands-Forrajes Tropicales, 2(1), pp. 136–137. doi: 10.17138/tgft(2)136-137.