@article{Vamvatira-Nakou:2266,
      author        = "Vamvatira-Nakou, C. and  Royer, P. and  Hutsemékers, D.
                       and  Rauw, G. and  Nazé, Y. and  Exter, K. and  Waelkens,
                       C. and  Groenewegen, M.",
      title         = "{Herschel-PACS observations of Nebulae Ejected by Massive
                       Stars}",
      year          = "2011",
}