1. M. E. Kost, A. L. Shilov, and V. I. Mikheeva, Compounds of Rare-Earth Elements: Hydrides, Borides, Carbides, Phosphides, Pnictides, Chalcogenides, and Pseudohalides (Nauka, Moscow, 1983) [in Russian].
2. P. G. Rustamov, O. M. Aliev, I. P. Aliev, and A. V. Einullaev, Chalcolanthanates of Rare Elements (Nauka, Moscow, 1989) [in Russian].
3. E. I. Yarembash and A. A. Eliseev, Chalcogenides of Rare-Earth Elements (Nauka, Moscow, 1975) [in Russian].
4. V. Balaram, Geosci. Front. 10, 1285 (2019). https://doi.org/10.1016/j.gsf.2018.12.005
5. H. Huang and J.-J. Zhu, Analyst 144, 6789 (2019). https://doi.org/10.1039/C9AN01562K