@article{cordeiro_marques_2015,  title={Natural Nanotubes Reinforcing Heterophasic Polypropylene},  volume={18},  ISSN={1516-1439},  url={https://doi.org/10.1590/1516-1439.286514},  DOI={10.1590/1516-1439.286514},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Cordeiro, Suellem Barbosa and Marques, Maria de Fátima Vieira},  year={2015},  month={Mar},  pages={267–273} }