https://nanxstats.r-universe.dev/liftrhttps://nanxstats.r-universe.dev/api/packages/liftrhttps://nanxstats.r-universe.dev/liftr/liftr.pdfhttps://nanxstats.r-universe.dev/liftr/doc/manual.htmlhttps://nanxstats.r-universe.dev/liftr/NEWShttps://nanxstats.r-universe.dev/liftr/NEWS.txthttps://nanxstats.r-universe.dev/liftr/citationhttps://nanxstats.r-universe.dev/liftr/citation.txthttps://nanxstats.r-universe.dev/liftr/citation.cffhttps://nanxstats.r-universe.dev/liftr/doc/liftr-intro.Rmdhttps://nanxstats.r-universe.dev/articles/liftr/liftr-intro.htmlhttps://nanxstats.r-universe.dev/liftr/doc/liftr-tidyverse.Rmdhttps://nanxstats.r-universe.dev/articles/liftr/liftr-tidyverse.htmlhttps://nanxstats.r-universe.dev/liftr/doc/liftr-addins.Rmdhttps://nanxstats.r-universe.dev/articles/liftr/liftr-addins.html