@article{Diaz:99085,
      author        = "Diaz, C. and Valenzuela, M.L. and Cifuentes-Vaca, O. and
                       Segovia, M. and Laguna-Bercero, M.A.",
      title         = "{Incorporation of nio into sio2, tio2, al2o3, and
                       na4.2ca2.8(si6o18) matrices: Medium effect on the optical
                       properties and catalytic degradation of methylene blue}",
      year          = "2020",
}