@article{he_chen_2016,  title={Voltammetric Determination of Sulfonamides with a Modified Glassy Carbon Electrode Using Carboxyl Multiwalled Carbon Nanotubes},  volume={27},  ISSN={0103-5053},  url={https://doi.org/10.5935/0103-5053.20160114},  DOI={10.5935/0103-5053.20160114},  number={12},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={He, Bao-shan and Chen, Wen-bo},  year={2016},  month={Dec},  pages={2216–2225} }