@article{DkPOmega,
  title = "A note on the stability number of an orthogonality graph",
  author = "de Klerk, E. and Pasechnik, D. V",
  year = "2007",
  issn = "0195-6698",
  journal = "European Journal of Combinatorics",
  note = "arxiv.org e-print math.CO/0505038",
  pages = "1971--1979",
  volume = "28",
  doi = "10.1016/j.ejc.2006.08.011",
}