https://kjhealy.r-universe.dev/gssrhttps://kjhealy.r-universe.dev/api/packages/gssrhttps://kjhealy.r-universe.dev/gssr/gssr.pdfhttps://kjhealy.r-universe.dev/gssr/doc/manual.htmlhttps://kjhealy.r-universe.dev/gssr/NEWShttps://kjhealy.r-universe.dev/gssr/NEWS.txthttps://kjhealy.r-universe.dev/gssr/citationhttps://kjhealy.r-universe.dev/gssr/citation.txthttps://kjhealy.r-universe.dev/gssr/citation.cffhttps://kjhealy.r-universe.dev/gssr/doc/overview.Rmdhttps://kjhealy.r-universe.dev/articles/gssr/overview.html