[1]
J. Karch J., R. Birringer and H. Gleiter: Nature Vol. 330 (1987), p.556.
Google Scholar
[2]
E.T. Goldburt, B. Kulkarni, R.N. Bhargava, J. Taylor and M. Libera: J. Lumin. Vol. 72-74 (1997), p.190.
Google Scholar
[3]
G. Wakefield, H.A. Keron, P.J. Dobson and J.L. Hutchison: J. Phys. Chem. Solids Vol. 60 (1999), p.503.
Google Scholar
[4]
D. Hreniak and W. Strek: J. Alloys. Comp. Vol. 346 (2002), p.183.
Google Scholar
[5]
M. Zawadzki, J. Wrzyszcz, W. Str � k, D. Hreniak: J. All. Comp. Vol. 323-324 (2001), p.279.
Google Scholar
[6]
W. Yuren, L. Kunquan, W. Dazhi, W. Zhonghua and F. Zhengzhi: J. Phys.: Condens. Matter Vol. 6 (1994), p.633.
DOI: 10.1088/0953-8984/6/3/005
Google Scholar
[7]
E. Zych, D. Hreniak and W. Strek: J. Phys. Chem. B Vol. 106 (2002), p.3805.
Google Scholar
[8]
D. K. Williams, H. Yuan and B. M. Tissue, J. Luminescence Vol. 83-84 (1999), p.297.
Google Scholar
[9]
A. Opalinska et al., submitted to Solid State Phenomena, present volume.
Google Scholar
[10]
Mitsuhashi T., Ichihara M., Taksuke U.: Phys. Rev. Lett. Vol. 57 (1974), p.97.
Google Scholar
[11]
O. V. Pozhidaeva, E. N. Korytkova, I. A. Drozdova and V. V. Gusarov: Russ. J. Gen. Chem. Vol. 69 (1999), p.1219.
Google Scholar
[12]
A. Brioude, F. Lequevre, J. Mugnier, C. Bovier, J. Dumas and J.C. Plenet: The European Physical Journal B Vol. 26 (2002), p.115.
DOI: 10.1007/s10051-002-8950-z
Google Scholar
[13]
M.S. Vong, P.A. Sermon and Y. Sun: J. Chim. Phys. PCB. Vol. 93 (1996), p.1016.
Google Scholar
[14]
M. Garcia-Hipolito, R. Martinez, O. Alvarez-Fregoso, E. Martinez and C. Falcony: J. Lumin. Vol. 93 (2001) p.9.
Google Scholar
[15]
R. Reisfeld, M. Zelner and A. Patra: J. All. Comp. Vol. 300-301 (2000), p.147.
Google Scholar
[16]
S. Gutzov, M. Bredol and F. Wasgestian: J. Phys. Chem. Solids Vol. 59 (1998), p.69.
Google Scholar
[17]
M. Zawadzki, D. Hreniak, J. Wrzyszcz, W. Mista, H. Grabowska & W. Str � k: submitted to Chem. Phys.
Google Scholar
[18]
B. Savoini, J.E. Munoz Santiuste and R. Goznales: Phys. Rev. B Vol. 56 (1997), p.5856.
Google Scholar
[19]
H. Dornauf and J. Heber, J. Luminescence Vol. 22 (1980), p.2.
Google Scholar
[20]
T.H. Etsel, S.N. Flengas, Chem. Rev. Vol. 70 (1970), p.339.
Google Scholar