@article{Kroin_2021, title={Pedra filosofal}, volume={8}, url={https://periodicos.ufes.br/simbiotica/article/view/36389}, DOI={10.47456/simbitica.v8i2.36389}, number={2}, journal={Simbiótica. Revista Eletrônica}, author={Kroin, Vanderlei}, year={2021}, month={ago.}, pages={245–246} }