@article{generalizedpresentationattackdetectiona,
  title = {Generalized Presentation Attack Detection: a face anti-spoofing evaluation proposal},
  author = {Artur Costa-Pazo and David Jimenez-Cabello and Esteban Vazquez-Fernandez and Jose L. Alba-Castro and Roberto J. López-Sastre},
  year = {2019},
  eprint = {1904.06213},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1904.06213v1},
}