@article{FischerShaki2018,
  author    = {Martin H. Fischer and Samuel Shaki},
  title     = {Repeating Numbers Reduces Results: Violations of the Identity Axiom in Mental Arithmetic},
  journal   = {Frontiers in psychology},
  volume    = {9},
  doi       = {10.3389/fpsyg.2018.02453},
  year      = {2018},
}