1. Er’kina, M.A., Nikovskii, I.A., Tupikov, A.S., and Polyakov, V.A., Production of a phosphazene-containing plasticizer for polymer materials, Usp. Khim. Tekhnol., 2017, vol. 31, no. 11, pp. 149–151.
2. Bredov, N.S., Gorlov, M.V., Esin, A.S., Bukovckaya, A.A., Kireev, V.V., Sinegribova, O.A., and Ryabochenko, M.D., Linear 2-ethylhexyl imidophosphoric esters as effective rare-earth element extractants, Appl. Sci., 2020, no. 10, pp. 1229–1244. https://doi.org/10.3390/app10041229
3. Ryabochenko, M.D., Shumikhin, K.V., Sinegribova, O.A., and Chekmarev, A.M., Phosphazenes as collective extractants of REEs, Khim. Tekhnol., 2018, vol. 19, no. 12, pp. 526–568.
4. Semenov, A.A., Abramov, A.M., Sobol’, Yu.B., Galieva, Zh.N., Galantsev, A.V., and Gerya, V.O., Preparation of Nd2O3 through the extraction separation of rare-earth concentrate recovered from phosphogypsum, Inorg. Mater., 2016, vol. 52, no. 2, pp. 233–236.