@article{vidal_2019,  title={The historical-sociological matrix and ethos at the heart and strength of MPLA’s modern Angola},  volume={25},  ISSN={1413-7704},  url={https://doi.org/10.1590/TEM-1980-542X2018v250108},  DOI={10.1590/TEM-1980-542X2018v250108},  number={1},  journal={Tempo},  publisher={EdUFF - Editora da UFF},  author={Vidal, Nuno Carlos de Fragoso},  year={2019},  month={Jan},  pages={153–173} }