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