@article{Volpi:2818,
      author        = "Volpi, D. and  Blomme, R. and  De Becker, M. and  Rauw,
                       G.",
      title         = "{Non-thermal radio emission from colliding-wind binaries:
                       modelling Cyg OB2 No. 8A and No. 9}",
      year          = "2011",
}