@article{Najder-Kozdrowska:2003,
  author  = "L. Kozdrowska and A. Więckowski and B. Pilawa",
  title   = "Microwave saturation of EPR spectra of thermally decomposed vitrinite",
  journal = "Karbo",
  volume  = "R. 48",
  number  = "nr 4",
  pages   = "232--235",
  year    = "2003",
}