@article{zeybek_zeybek_pekmez_pekyardımcı_kılıç_2012,  title={Development of an amperometric enzyme electrode based on poly(o-phenylenediamine) for the determination of total cholesterol in serum},  volume={23},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532012001200011},  DOI={10.1590/S0103-50532012001200011},  number={12},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Zeybek, Derya Koyuncu and Zeybek, Bülent and Pekmez, Nuran Özçiçek and Pekyardımcı, Şule and Kılıç, Esma},  year={2012},  month={Dec},  pages={2222–2231} }