@article{villaquirán_gómez_luiggi_2002,  title={Calculo de Parámetros Electrónicos Para el Grafito Bernal},  volume={5},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392002000200012},  DOI={10.1590/S1516-14392002000200012},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Villaquirán, Claudia and Gómez, Marisol and Luiggi, Ney},  year={2002},  month={Jun},  pages={155–163} }