@article{annotatingshadowshighlightsandfacesthe,
  title = {Annotating shadows, highlights and faces: the contribution of a 'human in the loop' for digital art history},
  author = {Maarten W. A. Wijntjes},
  year = {2018},
  eprint = {1809.03539},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1809.03539v1},
}