@article{CausinAldaz:106953,
      author        = "Causin Aldaz, Valeria and Calvo Calzada, Elena-Tapia
                       Barcones, Javier",
      title         = "{Evolución de la rentabilidad de Grifols e IAG a causa
                       del COVID-19}",
      year          = "2021",
}