@article{Padlyak:2014,
  author  = "B. Padlyak and I. Kindrat and V. Protsiuk and A. Drzewiecki",
  title   = "Optical spectroscopy of Li2B4O7 and LiCaBO3 borate glasses doped with europium",
  journal = "Ukrainian Journal of Physical Optics",
  volume  = "Vol. 15",
  number  = "no. 3",
  pages   = "103--117",
  year    = "2014",
}