@article{gonzález_álvarez cuartas_einstein_2023,  title={On the spacing distributions in the spin-1/2 XX chain},  volume={45},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2023-0019},  DOI={10.1590/1806-9126-RBEF-2023-0019},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={González, Diego Luis and Álvarez Cuartas, Juan David and Einstein, T. L.},  year={2023},  pages={e20230019} }