@article{zhong_cao_jin_wang_2014,  title={Studies on the formation and forming mechanism of the
               related substance E in potassium clavulanate production by HPLC-MS/MS},  volume={50},  ISSN={1984-8250},  url={https://doi.org/10.1590/S1984-82502014000200019},  DOI={10.1590/S1984-82502014000200019},  number={2},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Zhong, Chuanqing and Cao, Guangxiang and Jin, Xiaoqing and Wang, Fengshan},  year={2014},  month={Apr},  pages={391–399} }