@article{Alvaro:79366,
      author        = "Alvaro, J.J. and Bauluz, B. and Gil-Imaz, A. and Ubide,
                       T.",
      title         = "{Ar-40/Ar-39 chronological constraints on syn- and
                       post-Variscan biotite porphyroblasts from the Iberian
                       Chains, NE Spain}",
      year          = "2018",
}