@article{Blomme:2190,
      author        = "Blomme, R. and Nazé, Y. and Volpi, D. and De Becker, M.
                       and Prinja, R. K. and Pittard, J. M. and Parkin, E. R. and
                       Absil, O.",
      title         = "{The 2.35 year itch of Cygnus OB2 #9. II. Radio
                       monitoring}",
      year          = "2013",
}