https://chrchang.r-universe.dev/pgenlibrhttps://chrchang.r-universe.dev/api/packages/pgenlibrhttps://chrchang.r-universe.dev/pgenlibr/pgenlibr.pdfhttps://chrchang.r-universe.dev/pgenlibr/doc/manual.htmlhttps://chrchang.r-universe.dev/pgenlibr/NEWShttps://chrchang.r-universe.dev/pgenlibr/NEWS.txthttps://chrchang.r-universe.dev/pgenlibr/citationhttps://chrchang.r-universe.dev/pgenlibr/citation.txthttps://chrchang.r-universe.dev/pgenlibr/citation.cff