@article{krüger_2001,  title={Antonio Gomes Penna},  volume={21},  ISSN={1414-9893},  url={https://doi.org/10.1590/S1414-98932001000100010},  DOI={10.1590/S1414-98932001000100010},  number={1},  journal={Psicologia: Ciência e Profissão},  publisher={Conselho Federal de Psicologia},  author={Krüger, Helmuth},  year={2001},  month={Mar},  pages={97–97} }