@article{5392,
  author = {Marek Sikora},
  title = {High-energy radiation from active galactic nuclei},
  year = {1994},
  journal = {The Astrophysical Journal Supplement Series},
  volume = {90},
  pages = {923},
  month = {Jan-02-1994},
  issn = {0067-0049},
  url = {http://articles.adsabs.harvard.edu/full/1994ApJS...90..923S},
  doi = {10.1086/191926},
}