@article{tongu_borges_giovedi_cohen_almeida_1999,  title={Reliability of echographic examination for the study of optic nerve cupping},  volume={62},  ISSN={0004-2749},  url={https://doi.org/10.5935/0004-2749.19990010},  DOI={10.5935/0004-2749.19990010},  number={3},  journal={Arquivos Brasileiros de Oftalmologia},  publisher={Conselho Brasileiro de Oftalmologia},  author={Tongu, M.T.S and Borges, M.J.H and Giovedi, M.R.A and Cohen, R and Almeida, G.V},  year={1999},  month={Jun},  pages={265–268} }