@article{carvalho_sorrilha_rodrigues_1999,  title={Reaction of aromatic azides with strong acids: formation of fused nitrogen heterocycles and arylamines},  volume={10},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50531999000500012},  DOI={10.1590/S0103-50531999000500012},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Carvalho, Marcia de and Sorrilha, Ana E.P.M. and Rodrigues, J. Augusto R.},  year={1999},  month={Sep},  pages={415–420} }