To cite package ‘cda’ in publications use:

  Auguie B (2024). _cda: Coupled-Dipole Approximation for
  Electromagnetic Scattering by Three- Dimensional Clusters of
  Sub-Wavelength Particles_. R package version 2.0.0,
  <https://github.com/plasmonics/cda>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cda: Coupled-Dipole Approximation for Electromagnetic Scattering by
Three- Dimensional Clusters of Sub-Wavelength Particles},
    author = {Baptiste Auguie},
    year = {2024},
    note = {R package version 2.0.0},
    url = {https://github.com/plasmonics/cda},
  }