Biostratigraphy and Chemostratigraphy Across the Lower Kellwasser Boundary in Laye Section, Guizhou Province
CHANG Jieqiong, BAI Zhiqiang, LI Yukun, GUO Jianxiang, PENG Yongbo, SHEN Bing
Acta Scientiarum Naturalium Universitatis Pekinensis . 2018, (4): 752 -762 .  DOI: 10.13209/j.0479-8023.2018.013