To cite package ‘ptinpoly’ in publications use:

  Maisog JM, Wang Y, Luta G, Liu J (2020). _ptinpoly:
  Point-in-Polyhedron Test (2D and 3D)_. R package version 2.8,
  <https://CRAN.R-project.org/package=ptinpoly>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ptinpoly: Point-in-Polyhedron Test (2D and 3D)},
    author = {Jose M. Maisog and Yuan Wang and George Luta and Jianfei Liu},
    year = {2020},
    note = {R package version 2.8},
    url = {https://CRAN.R-project.org/package=ptinpoly},
  }

ATTENTION: This citation information has been auto-generated from the
package DESCRIPTION file and may need manual editing, see
‘help("citation")’.