https://eunscho.r-universe.dev/optimflexhttps://eunscho.r-universe.dev/api/packages/optimflexhttps://eunscho.r-universe.dev/optimflex/optimflex.pdfhttps://eunscho.r-universe.dev/optimflex/doc/manual.htmlhttps://eunscho.r-universe.dev/optimflex/NEWShttps://eunscho.r-universe.dev/optimflex/NEWS.txthttps://eunscho.r-universe.dev/optimflex/citationhttps://eunscho.r-universe.dev/optimflex/citation.txthttps://eunscho.r-universe.dev/optimflex/citation.cffhttps://eunscho.r-universe.dev/optimflex/doc/Introduction-to-optimflex.Rmdhttps://eunscho.r-universe.dev/articles/optimflex/Introduction-to-optimflex.html