@article{mourão_martinho_2020,  title={Portuguese Ministers as Political Survivors: an empirical analysis of the first 20 Constitutional Governments},  volume={28},  ISSN={0104-4478},  url={https://doi.org/10.1590/1678-987320287306},  DOI={10.1590/1678-987320287306},  number={73},  journal={Revista de Sociologia e Política},  publisher={Universidade Federal do Paraná},  author={Mourão, Paulo and Martinho, Vítor Domingues},  year={2020},  pages={e006} }