https://evalclass.r-universe.dev/precrechttps://evalclass.r-universe.dev/api/packages/precrechttps://evalclass.r-universe.dev/precrec/precrec.pdfhttps://evalclass.r-universe.dev/precrec/doc/manual.htmlhttps://evalclass.r-universe.dev/precrec/NEWShttps://evalclass.r-universe.dev/precrec/NEWS.txthttps://evalclass.r-universe.dev/precrec/citationhttps://evalclass.r-universe.dev/precrec/citation.txthttps://evalclass.r-universe.dev/precrec/citation.cffhttps://evalclass.r-universe.dev/precrec/doc/introduction.Rmdhttps://evalclass.r-universe.dev/articles/precrec/introduction.html