@article{babaei_taheri_afrasiabi_2011,  title={A multi-walled carbon nanotube-modified glassy carbon electrode as a new sensor for the sensitive simultaneous determination of paracetamol and tramadol in pharmaceutical preparations and biological fluids},  volume={22},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532011000800020},  DOI={10.1590/S0103-50532011000800020},  number={8},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Babaei, Ali and Taheri, Ali Reza and Afrasiabi, Mohammad},  year={2011},  month={Aug},  pages={1549–1558} }