@article{silva_vargas_poley_rodriguez_baptista_2005,  title={Structural impact of hydroxyvalerate in polyhydroxyalkanoates (PHAscl) dense film monitored by XPS and photothermal methods},  volume={16},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532005000500017},  DOI={10.1590/S0103-50532005000500017},  number={4},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Silva, Marcelo G. da and Vargas, Helion and Poley, Luiz H. and Rodriguez, Ruben S. and Baptista, Gilson B.},  year={2005},  month={Jul},  pages={790–795} }