@article{royall1998-9598672,
  author  = {Royall, D. R. and Cordes, J. A. and Polk, M.},
  title   = {{CLOX: an executive clock drawing task}},
  journal = {Journal of neurology, neurosurgery, and psychiatry},
  year    = {1998},
  doi     = {10.1136/jnnp.64.5.588},
  pmid    = {9598672},
  url     = {https://doi.org/10.1136/jnnp.64.5.588}
}