@article{kreppner_2001,  title={On the generation of data in the study of social interaction},  volume={17},  ISSN={0102-3772},  url={https://doi.org/10.1590/S0102-37722001000200003},  DOI={10.1590/S0102-37722001000200003},  number={2},  journal={Psicologia: Teoria e Pesquisa},  publisher={Instituto de Psicologia, Universidade de Brasília},  author={Kreppner, Kurt},  year={2001},  month={May},  pages={109–118} }