@article{afacerecognitionsystemsworstmorph,
  title = {Worst-Case Morphs: a Theoretical and a Practical Approach},
  author = {Una M. Kelly and Raymond Veldhuis and Luuk Spreeuwers},
  year = {2021},
  eprint = {2111.15416},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2111.15416v2},
}