Citation: Aleonard, S; le Fur, Y; Gorius, M F; Roux, M T (1980). Structure cristalline de la phase $-beta-K Er2 F7. Composes isotypes. Journal of Solid State Chemistry, 34, pp. 79-89.
Formula: Er2 F7 K
Chemical name:Potassium dierbium fluoride - $-beta