1. Chen BH, Wei HX, Huang ZT et al (2007) A review of Ce abnormalities and their influencing factors in surface geological bodies. Chin Rare Earths 28(4):80–83
2. Chen S, Gui HR, Sun LH et al (2014) Characteristics and significance of rare earth elements in multi-aquifer groundwater in Wolonghu coal mine, North Abhui Province. Chin Rare Earths 35(3):94–100
3. Ge T, Tian Y, Wang Q (2008) Distribution characteristics of rare earth elements in water mixing process in the North Sea Peninsula. J Chin Soc Rare Earths 26(6):754–759
4. Kaczmarek J (1983) Rare earth discovery and industrial separation. Translated by Wei Y. Chin Rare Earths (For Rare Earth Appl Album) 60–73:135–166
5. Liu XZ (2009) Rare earth fine chemical chemistry. Chemical Industry Press, Beijing, pp 7–10