To cite package ‘spherepc’ in publications use:

Lee J, Oh H (2021). spherepc: Spherical Principal Curves. R package version 0.1.7, https://CRAN.R-project.org/package=spherepc.

Corresponding BibTeX entry:

  @Manual{,
    title = {spherepc: Spherical Principal Curves},
    author = {Jongmin Lee and Hee-Seok Oh},
    year = {2021},
    note = {R package version 0.1.7},
    url = {https://CRAN.R-project.org/package=spherepc},
  }