@article{silva_almeida_oliveira_2007,  title={Comércio internacional "x" intranacional no Brasil: medindo o efeito-fronteira},  volume={17},  ISSN={0103-6351},  url={https://doi.org/10.1590/S0103-63512007000300003},  DOI={10.1590/S0103-63512007000300003},  number={3},  journal={Nova Economia},  publisher={Nova Economia},  author={Silva, Orlando M. da and Almeida, Fernanda M. de and Oliveira, Bethania M. de},  year={2007},  month={Sep},  pages={427–439} }