https://liljing.r-universe.dev/gfoRmulaICEhttps://liljing.r-universe.dev/api/packages/gfoRmulaICEhttps://liljing.r-universe.dev/gfoRmulaICE/gfoRmulaICE.pdfhttps://liljing.r-universe.dev/gfoRmulaICE/doc/manual.htmlhttps://liljing.r-universe.dev/gfoRmulaICE/NEWShttps://liljing.r-universe.dev/gfoRmulaICE/NEWS.txthttps://liljing.r-universe.dev/gfoRmulaICE/citationhttps://liljing.r-universe.dev/gfoRmulaICE/citation.txthttps://liljing.r-universe.dev/gfoRmulaICE/citation.cff