To cite package ‘sfcurve’ in publications use:

  Gu Z (2024). _sfcurve: 2x2, 3x3 and Nxn Space-Filling Curves_. R
  package version 1.0.1, , <https://github.com/jokergoo/sfcurve>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sfcurve: 2x2, 3x3 and Nxn Space-Filling Curves},
    author = {Zuguang Gu},
    year = {2024},
    note = {R package version 1.0.1, 
},
    url = {https://github.com/jokergoo/sfcurve},
  }