@article{gelfuso_thomazini_souza_lima junior_2014,  title={Vibrational analysis of coconut fiber-PP composites},  volume={17},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392013005000200},  DOI={10.1590/S1516-14392013005000200},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Gelfuso, Maria Virginia and Thomazini, Daniel and Souza, Júlio César Silva de and Lima Junior, José Juliano de},  year={2014},  month={Mar},  pages={367–372} }