@article{Cidale:2012,
      author        = "Cidale, L. S. and  Arias, M. L. and  Torres, A. F. and 
                       Zorec, J. and  Frémat, Y. and  Cruzado, A.",
      title         = "{Fundamental parameters of He-weak and He-strong stars}",
      year          = "2007",
}