@article{calixto_1991,  title={Editorial},  volume={54},  ISSN={0004-2749},  url={https://doi.org/10.5935/0004-2749.19910017},  DOI={10.5935/0004-2749.19910017},  number={4},  journal={Arquivos Brasileiros de Oftalmologia},  publisher={Conselho Brasileiro de Oftalmologia},  author={Calixto, Nassim},  year={1991},  month={Aug},  pages={155–155} }