@article{rocha_rodella_marino_martins_2009,  title={Genetic variability among Commelina weed species from the states of Paraná and São Paulo, Brazil},  volume={27},  ISSN={0100-8358},  url={https://doi.org/10.1590/S0100-83582009000300001},  DOI={10.1590/S0100-83582009000300001},  number={3},  journal={Planta Daninha},  publisher={Sociedade Brasileira da Ciência das Plantas Daninhas },  author={Rocha, D.C. and Rodella, R.A. and Marino, C.L. and Martins, D.},  year={2009},  pages={421–427} }