@article{ziegler_2015, title={Introducción}, volume={26}, ISSN={0103-7307}, url={https://doi.org/10.1590/0103-7307201507701}, DOI={10.1590/0103-7307201507701}, number={2}, journal={Pro-Posições}, publisher={UNICAMP - Faculdade de Educação}, author={Ziegler, Sandra}, year={2015}, month={May}, pages={25–32} }