https://singator.r-universe.dev/grouperhttps://singator.r-universe.dev/api/packages/grouperhttps://singator.r-universe.dev/grouper/grouper.pdfhttps://singator.r-universe.dev/grouper/doc/manual.htmlhttps://singator.r-universe.dev/grouper/NEWShttps://singator.r-universe.dev/grouper/NEWS.txthttps://singator.r-universe.dev/grouper/citationhttps://singator.r-universe.dev/grouper/citation.txthttps://singator.r-universe.dev/grouper/citation.cffhttps://singator.r-universe.dev/grouper/doc/d-sanity-checks.Rmdhttps://singator.r-universe.dev/articles/grouper/d-sanity-checks.htmlhttps://singator.r-universe.dev/grouper/doc/b-diversity-skill.Rmdhttps://singator.r-universe.dev/articles/grouper/b-diversity-skill.htmlhttps://singator.r-universe.dev/grouper/doc/c-subgroups-preference.Rmdhttps://singator.r-universe.dev/articles/grouper/c-subgroups-preference.htmlhttps://singator.r-universe.dev/grouper/doc/e-phd-workload.Rmdhttps://singator.r-universe.dev/articles/grouper/e-phd-workload.htmlhttps://singator.r-universe.dev/grouper/doc/a-related-work.Rmdhttps://singator.r-universe.dev/articles/grouper/a-related-work.html