To cite package ‘sirad’ in publications use:

  Bojanowski JS (2016). _sirad: Functions for Calculating Daily Solar
  Radiation and Evapotranspiration_. R package version 2.3-3, ,
  <https://r-forge.r-project.org/projects/sirad>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sirad: Functions for Calculating Daily Solar Radiation and
Evapotranspiration},
    author = {Jedrzej S. Bojanowski},
    year = {2016},
    note = {R package version 2.3-3, 
},
    url = {https://r-forge.r-project.org/projects/sirad},
  }

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