To cite package ‘SunCalcMeeus’ in publications use:

Aphalo P (2015). “The r4photobiology suite.” UV4Plants Bulletin, 2015(1), 21-29. doi:10.19232/uv4pb.2015.1.14.

Corresponding BibTeX entry:

  @Article{,
    author = {Pedro J. Aphalo},
    title = {The r4photobiology suite},
    journal = {UV4Plants Bulletin},
    volume = {2015},
    number = {1},
    pages = {21-29},
    year = {2015},
    doi = {10.19232/uv4pb.2015.1.14},
  }