Yu, Shiyong, Chen, Xuexiang, Liu, Xiuling, Fang, Zhen, Guo, Junfeng, Zhan, Senyang, Fang, Hui, and Chen, Fahu. Ancient water wells reveal a prolonged drought in the lower Yellow River area about 2800 years ago. Retrieved from https://par.nsf.gov/biblio/10088653. Science Bulletin 63.20 Web. doi:10.1016/j.scib.2018.09.017.

Yu, Shiyong, Chen, Xuexiang, Liu, Xiuling, Fang, Zhen, Guo, Junfeng, Zhan, Senyang, Fang, Hui, & Chen, Fahu. Ancient water wells reveal a prolonged drought in the lower Yellow River area about 2800 years ago. Science Bulletin, 63 (20). Retrieved from https://par.nsf.gov/biblio/10088653. https://doi.org/10.1016/j.scib.2018.09.017

Yu, Shiyong, Chen, Xuexiang, Liu, Xiuling, Fang, Zhen, Guo, Junfeng, Zhan, Senyang, Fang, Hui, and Chen, Fahu. "Ancient water wells reveal a prolonged drought in the lower Yellow River area about 2800 years ago". Science Bulletin 63 (20). Country unknown/Code not available. https://doi.org/10.1016/j.scib.2018.09.017. https://par.nsf.gov/biblio/10088653.

@article{osti_10088653,
place = {Country unknown/Code not available}, title = {Ancient water wells reveal a prolonged drought in the lower Yellow River area about 2800 years ago}, url = {https://par.nsf.gov/biblio/10088653}, DOI = {10.1016/j.scib.2018.09.017}, abstractNote = {}, journal = {Science Bulletin}, volume = {63}, number = {20}, author = {Yu, Shiyong and Chen, Xuexiang and Liu, Xiuling and Fang, Zhen and Guo, Junfeng and Zhan, Senyang and Fang, Hui and Chen, Fahu}, }