@article{zander_plastino_plastino_2009,  title={Quantum entanglement in a many-body system exhibiting multiple quantum phase transitions},  volume={39},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332009000400022},  DOI={10.1590/S0103-97332009000400022},  number={2a},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Zander, C. and Plastino, A. and Plastino, A. R.},  year={2009},  month={Aug},  pages={464–467} }