@article{luz-burgoa_oliveira_martins_stauffer_sousa_2003,  title={Computer simulation of sympatric speciation with Penna ageing model},  volume={33},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332003000300027},  DOI={10.1590/S0103-97332003000300027},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Luz-Burgoa, K. and Oliveira, S. Moss de and Martins, J.S. Sá and Stauffer, D. and Sousa, A.O.},  year={2003},  month={Sep},  pages={623–627} }