@article{CalvoSevillano:71061,
      author        = "Calvo Sevillano, Guiomar and Valero Delgado, Alicia and
                       Valero Capilla, Antonio",
      title         = "{Thermodynamic approach to evaluate the criticality of raw
                       materials and its application through a material flow
                       analysis in Europe}",
      year          = "2017",
}