Charge compensation in RE3+ (RE = Eu, Gd) and M+ (M = Li, Na, K) co-doped alkaline earth nanofluorides obtained by microwave reaction with reactive ionic liquids leading to improved optical properties - Lorbeer, C.; Behrends, F.; Cybinska, J.; Eckert, Hellmut; Mudring, A. -V. (Journal of Materials Chemistry C, 2014)