@article{käfer_1947,  title={Sinal oftalmoscópico precoce da hipertensão intracraniana},  volume={5},  ISSN={0004-282X},  url={https://doi.org/10.1590/S0004-282X1947000400008},  DOI={10.1590/S0004-282X1947000400008},  number={4},  journal={Arquivos de Neuro-Psiquiatria},  publisher={Academia Brasileira de Neurologia - ABNEURO},  author={Käfer, J. Pereyra},  year={1947},  month={Oct},  pages={415–416} }