1. Z.F. Yang, Rare Earth Inform. 432 (2020) 6–14.
2. W.W. Wang, E.D. Li, H.L. Jin, Q. Li, C.L. Guo, Nonferr. Met. 6 (2020) 14–18.
3. X.Y. Li, B. Hui, W.L. Xiong, Y. Wang, Multipurpose Utilization of Mineral Resources 231 (2021) 17–24.
4. Q. Zheng, W.Wu, X. Bian, J. Rare Earths 35 (2017) 300–308.
5. Q. Zheng, X. Bian, W.Y. Wu, J. Iron Steel Res. Int. 24 (2017) 147–155.