@article{osório_fernando_alsina_2009,  title={Letter from the Guest Editor},  volume={15},  ISSN={0104-6500},  url={https://doi.org/10.1590/S0104-65002009000300001},  DOI={10.1590/S0104-65002009000300001},  number={3},  journal={Journal of the Brazilian Computer Society},  publisher={Sociedade Brasileira de Computação},  author={Osório, Fernando Santos and Fernando, Denis and Alsina, Wolf Pablo Javier},  year={2009},  month={Sep} }