To cite package ‘nvctr’ in publications use:

  Spinielli E (2024). _nvctr: The n-vector Approach to Geographical
  Position Calculations using an Ellipsoidal Model of Earth_. R package
  version 0.1.4.9000, , <https://github.com/euctrl-pru/nvctr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {nvctr: The n-vector Approach to Geographical Position Calculations
using an Ellipsoidal Model of Earth},
    author = {Enrico Spinielli},
    year = {2024},
    note = {R package version 0.1.4.9000, 
},
    url = {https://github.com/euctrl-pru/nvctr},
  }