@article{cheng_zhang_xin_gao_2014,  title={Comparative pharmacognosy of <i>Pyrrosia petiolosa</i> and   <i>Pyrrosia davidii</i> },  volume={24},  ISSN={0102-695X},  url={https://doi.org/10.1016/j.bjp.2014.07.017},  DOI={10.1016/j.bjp.2014.07.017},  number={4},  journal={Revista Brasileira de Farmacognosia},  publisher={Sociedade Brasileira de Farmacognosia},  author={Cheng, Dandan and Zhang, Yingying and Xin, Xiaowei and Gao, Demin},  year={2014},  month={Jul},  pages={368–380} }