@article{carvalho_braga_2025,  title={The Ornstein-Zernike Equation: three distinct approaches},  volume={47},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2024-0407},  DOI={10.1590/1806-9126-RBEF-2024-0407},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Carvalho, F.S. and Braga, J.P.},  year={2025},  pages={e20240407} }