@article{freitas_costa_2021,  title={Accessibility to primary health care in low-density regions. A case study: NUTS III - Baixo Alentejo - Portugal},  volume={26},  ISSN={1413-8123},  url={https://doi.org/10.1590/1413-81232021266.1.40892020},  DOI={10.1590/1413-81232021266.1.40892020},  journal={Ciência & Saúde Coletiva},  publisher={ABRASCO - Associação Brasileira de Saúde Coletiva},  author={Freitas, Carlos and Costa, Nuno Marques da},  year={2021},  month={Jun},  pages={2497–2506} }