@article{he_1991,  title={Resources of medicinal plants in China},  volume={86},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761991000600005},  DOI={10.1590/S0074-02761991000600005},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={He, Guan-Fu},  year={1991},  pages={9–12} }