To cite package ‘ContourFunctions’ in publications use:

Erickson C (2024). ContourFunctions: Create Contour Plots from Data or a Function. R package version 0.1.2.9000, https://github.com/collinerickson/contourfunctions.

Corresponding BibTeX entry:

  @Manual{,
    title = {ContourFunctions: Create Contour Plots from Data or a
      Function},
    author = {Collin Erickson},
    year = {2024},
    note = {R package version 0.1.2.9000},
    url = {https://github.com/collinerickson/contourfunctions},
  }