@article{machado_2008,  title={An analysis on single and central diffractive heavy flavour production at hadron colliders},  volume={38},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332008000400007},  DOI={10.1590/S0103-97332008000400007},  number={3b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Machado, M. V. T.},  year={2008},  month={Sep},  pages={416–420} }