1. Fedorov, P. P. Systems of alkali and rare-earth metal fluorides. Russ. J. Inorg. Chem. 1996, 44, 1703–1727.
2. Vedrine, A., Boutonnet, R., Sabatier, R., Cousseins, J. C. Les systemes RbF–SmF3 et CsF−SmF3. Etude des phases cubiques MLn3F10 (M = K, Rb; Ln = Lanthanide). Bull. Soc. Chim. Fr. 1975, 3−4, 445–448.
3. Greis, O., Haschke, J. M. Rare earth fluorides. In Handbook on the Physics and Chemistry of Rare Earths; GschneidnerJr.K. A., Eyring, L., Eds., Vol. 5. Elsevier: Amsterdam, 2005, pp. 387–460.
4. Denker, B., Shklovsky, E., Eds. Handbook of Solid-State Lasers: Materials, Systems and Applications; Woodhead Publishing Series in Electronic and Optical Materials; Elsevier: Amsterdam, 2013.
5. Kaminskii, A. A. Laser Crystals: Their Physics and Properties, 2nd ed.; Springer Berlin: Heidelberg, 1990.