#' @references
#'
#' The following references provide information on choosing
#' colour schemes, that are suitable for viewers who have
#' colour deficiencies.
#'
#' Light, Adam, and Patrick J. Bartlein. "The End of the Rainbow? Color
#' Schemes for Improved Data Graphics." *Eos, Transactions American Geophysical
#' Union* 85, no. 40 (2004): 385.
#' DOI: 10.1029/2004EO400002
## \doi{10.1029/2004EO400002}
## `https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2004EO400002`
#'
## Martin Jakobsson, Ron Macnab, and Members of the Editorial Board, IBCAO.
## Selective comparisons of GEBCO (1979) and IBCAO (2000) maps.
## `https://www.ngdc.noaa.gov/mgg/bathymetry/arctic/ibcao_gebco_comp.html`.
#'
#' Stephenson, David B. "Comment on 'Color Schemes for Improved Data
#' Graphics', by A Light and P.J. Bartlein." *Eos, Transactions American
#' Geophysical Union* 86, no.  20 (2005): 196.
#' DOI: 10.1029/2005EO200005
## \doi{10.1029/2005EO200005}.
## `https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2005EO200005`.
#'
#' Light, Adam, and Patrick J. Bartlein. "Reply to 'Comment on Color
#' Schemes for Improved Data Graphics,' by A. Light and P.J.  Bartlein'."
#' *Eos, Transactions American Geophysical Union* 86, no. 20 (2005): 196â€“196.
#' DOI: 10.1029/2005EO200006
## \doi{10.1029/2005EO200006}
## `https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2005EO200006`.
