@article{sanmartin_1998,  title={Dacriocistografia com subtração digital (DCGSD)},  volume={61},  ISSN={0004-2749},  url={https://doi.org/10.5935/0004-2749.19980082},  DOI={10.5935/0004-2749.19980082},  number={2},  journal={Arquivos Brasileiros de Oftalmologia},  publisher={Conselho Brasileiro de Oftalmologia},  author={Sanmartin, Zeniro José},  year={1998},  month={Apr},  pages={224–228} }