@article{reis_araújo_ferraz_moura_2006,  title={Inter-annual variations in the floristic and population structure of an herbaceous community of "caatinga" vegetation in Pernambuco, Brazil},  volume={29},  ISSN={0100-8404},  url={https://doi.org/10.1590/S0100-84042006000300017},  DOI={10.1590/S0100-84042006000300017},  number={3},  journal={Brazilian Journal of Botany},  publisher={Sociedade Botânica de São Paulo},  author={Reis, Ana Maria S. and Araújo, Elcida L. and Ferraz, Elba Maria N. and Moura, Ariadne N.},  year={2006},  month={Jul},  pages={497–508} }