@article{AtenciaCarrizo:58493,
      author        = "Atencia Carrizo, Jesús and Collados Collados, María
                       Victoria and Quintanilla Montón, Manuel and Marín Sáez,
                       J. and Sola Larrañaga, Iñigo Juan",
      title         = "{Holographic optical element to generate achromatic
                       vortices}",
      year          = "2013",
}