@article{acolordifferenceformulaforevaluating,
  title = {A color-difference formula for evaluating color pairs with no separation -- $\Delta E_{NS}$},
  year = {2019},
  eprint = {1904.11293},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1904.11293v1},
}