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- [5] POINT-CHARGE APPROXIMATION OF TRIGONAL TM2+ AND YB3+ CENTERS IN CRYSTALS OF CAF2 STRUCTURE JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (04): : 725 - 734
- [6] Upconversion luminescence of Tm3+/Yb3+ in fluoride-oxide Rengong Jingti Xuebao, 2007, 3 (512-514+544):
- [9] COVALENCY IN OCTAHEDRALLY CO-ORDINATED YB3+ PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1966, 88 (560P): : 325 - +