Fernandes, M. F., Fernandes, R. P. M. and Rodrigues, L. da S. (2001) “Diazotrophic bacteria associated to coconut palms in a coastal lowland region in Sergipe State, Brazil”, Pesquisa Agropecuaria Brasileira, 36(12), pp. 1509–1517. doi: 10.1590/S1678-3921.pab2001.v36.6285.