Almeida-Cortez, J. S. de, Tavares, F. M., Schulz, K., Pereira, R. de C. A. e Cierjacks, A. (2016) “Floristic survey of the caatinga in areas with different grazing intensities, Pernambuco, Northeast Brazil”, Journal of Environmental Analysis and Progress, 1(1), p. 43–51. doi: 10.24221/jeap.1.1.2016.986.43-51.