@article{silva_garden_pinto_2001,  title={The chemistry of isatins: a review from 1975 to 1999},  volume={12},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532001000300002},  DOI={10.1590/S0103-50532001000300002},  number={3},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Silva, Joaquim F. M. da and Garden, Simon J. and Pinto, Angelo C.},  year={2001},  month={May},  pages={273–324} }