@article{castellanos_alvarez-salazar_holanda_2020,  title={Testing discrepancies in the measurement of the acceleration of gravity in a physical pendulum experiment},  volume={42},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2019-0154},  DOI={10.1590/1806-9126-RBEF-2019-0154},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Castellanos, Ana R. Romero and Alvarez-Salazar, C. E. and Holanda, P. C. de},  year={2020},  pages={e20190154} }