@article{5275,
  author = {G. Madejski and C. Done and T. Turner and R. Mushotzky and P. Serlemitsos and Fabrizio Fiore and Marek Sikora and Mitchell Begelman},
  title = {Solving the mystery of the X-ray periodicity in the Seyfert galaxy NGC6814},
  year = {1993},
  journal = {Nature},
  volume = {365},
  pages = {626-628},
  month = {Feb-10-1994},
  issn = {0028-0836},
  url = {http://www.nature.com/doifinder/10.1038/365626a0},
  doi = {10.1038/365626a0},
}