https://cran.r-universe.dev/islandcodeshttps://cran.r-universe.dev/api/packages/islandcodeshttps://cran.r-universe.dev/islandcodes/islandcodes.pdfhttps://cran.r-universe.dev/islandcodes/doc/manual.htmlhttps://cran.r-universe.dev/islandcodes/NEWShttps://cran.r-universe.dev/islandcodes/NEWS.txthttps://cran.r-universe.dev/islandcodes/citationhttps://cran.r-universe.dev/islandcodes/citation.txthttps://cran.r-universe.dev/islandcodes/citation.cffhttps://cran.r-universe.dev/islandcodes/doc/islandcodes.Rmdhttps://cran.r-universe.dev/articles/islandcodes/islandcodes.html