@article{Witkowska:2006,
  author  = "A. Witkowska and B. Padlyak and J. Rybicki",
  title   = "Influence of rare-earth impurities on the Ge and Ga local structure in the Ca3Ga2Ge3O12 glass",
  journal = "Journal of Non-Crystalline Solids",
  volume  = "Vol. 352",
  number  = "iss. 40-41",
  pages   = "4346--4350",
  year    = "2006",
}