@article{yu_guo_2012,  title={Trophic ecology and microhabitat utilization by the Bufo gargarizans, Rana guentheri, and Rana limnocharis in southwestern China},  volume={29},  ISSN={1984-4670},  url={https://doi.org/10.1590/S1984-46702012000100006},  DOI={10.1590/S1984-46702012000100006},  number={1},  journal={Zoologia (Curitiba)},  publisher={Sociedade Brasileira de Zoologia},  author={Yu, Tonglei and Guo, Yanshu},  year={2012},  month={Feb},  pages={54–58} }