List of references by intial letter. Not all the references are complete or correct. If you have more or better information, please let me know.

Xiao, Yingwen ; 1991; First discovery of Sinopliosaurus in the Late Triassic in Central Yunnan; Regional Geology of China; Series 37, No.2: pp.180-182:
Xie, Shucheng, Pancost, Richard D, Yin, Hongfu, Wang, Hongmei and Evershed, Richard P ; 2005; Two episodes of microbial change coupled with Permo/Triassic faunal mass extinction; Nature (Letters to Nature); 434:24 MARCH 2005: pp.494-497: