Study on the geochemistry of rare earth elements in the Permian coal from Xiayukou, Weibei Coalfield
CUI Xiaonan,HUANG Wenhui,AO Weihua,ZHOU Hongpu,LIANG Fei
Earth Science Frontiers . 2016, (3): 90 -96 .  DOI: 10.13745/j.esf.2016.03.012