References
- Kröger , F.A. 1948 . Some Aspects of the Luminescence of Solids , Elsevier .
- Blasse , G. 1980 . Struct. Bonding , 42 : 1 – 1 .
- Ziegler , T. , Rauk , A. and Baerends , E.J. 1976 . Chem. Phys. , 16 : 209 – 209 .
- Johansen , H. 1983 . Molec. Phys. , 49 : 1209 – 1209 . Johansen, H., and Rettrup, S., 1983, Chem. Phys., 74, 77.
- Ballhausen , C.J. and Liehr , A.D. 1958 . J. molec. Spectrosc. , 2 : 342 – 342 . Ballhausen, C. J., 1963, Theor. chim. Acta, 1, 285.
- Ronde , H. and Blasse , G. 1978 . Inorg. nucl. Chem. , 40 : 215 – 215 .
- Barendswaard , W. , van Tol , J. and van der Waals , J.H. 1985 . Chem. Phys. Lett. , 121 : 361 – 361 .
- Barendswaard , W. , Weber , R.T. and van der Waals , J.H. 1987 . J. chem. Phys. , 87 : 3731 – 3731 .
- Barendswaard , W. and van der Waals , J.H. 1986 . Molec. Phys. , 59 : 337 – 337 .
- Süsse , P. and Buerger , M.J. 1970 . Z. Kristallogr. , 131 : 161 – 161 .
- van Kesteren , H.W. , Wenckebach , W.Th. and Disselhorst , J.A.J.M. 1987 . J. Phys. E , 20 : 648 – 648 .
- Winscom , C.J. and Maki , A.H. 1971 . Chem. Phys. Lett. , 12 : 264 – 264 .
- Ballhausen , C.J. and Trabjerg , I. 1972 . Molec. Phys. , 24 : 689 – 689 .
- Johnson , L.W. 1983 . J. chem. Phys. , 79 : 1096 – 1096 .
- Barendswaard , W. , Weber , R.T. and van der Waals , J.H. 1986 . Tunneling , Edited by: Jortner , J. and Pullman , B. 39 – 39 . Reidel .
- Barendswaard , W. , Weber , R.Th. and van der Waals , J.H. 1988 . J. Luminesc. , 40 & 41 : 51 – 51 .
- Pryce , M.H.L. 1950 . Proc. phys. Soc. A , 63 : 25 – 25 .
- van der Waals , J.H. 1986 . Int. Rev. phys. Chem. , 5 : 219 – 219 .
- Biederbick , R. , Born , G. , Hofstaetter , A. and Scharmann , A. 1975 . Phys. Stat. Sol. B , 69 : 55 – 55 .
- Ham , N.S. 1972 . Electron Paramagnetic Resonance , Edited by: Geschwind , S. Plenum Press . Chap. 1
- Blasse , G. 1968 . Philips Res. Rep. , 23 : 344 – 344 .
- Schadee , R.A. , Schmidt , J. and van der Waals , J.H. 1976 . Chem. Phys. Lett. , 41 : 435 – 435 .