@article{connectivitypreservingmultivaluedfunctio,
  title = {Connectivity Preserving Multivalued Functions in Digital Topology},
  author = {Laurence Boxer and P. Christopher Staecker},
  year = {2015},
  eprint = {1504.02174},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1504.02174v2},
}