https://cran.r-universe.dev/CDFhttps://cran.r-universe.dev/api/packages/CDFhttps://cran.r-universe.dev/CDF/CDF.pdfhttps://cran.r-universe.dev/CDF/doc/manual.htmlhttps://cran.r-universe.dev/CDF/citationhttps://cran.r-universe.dev/CDF/citation.txthttps://cran.r-universe.dev/CDF/citation.cff