https://zichongli5.r-universe.dev/PRIMALhttps://zichongli5.r-universe.dev/api/packages/PRIMALhttps://zichongli5.r-universe.dev/PRIMAL/PRIMAL.pdfhttps://zichongli5.r-universe.dev/PRIMAL/doc/manual.htmlhttps://zichongli5.r-universe.dev/PRIMAL/citationhttps://zichongli5.r-universe.dev/PRIMAL/citation.txthttps://zichongli5.r-universe.dev/PRIMAL/citation.cffhttps://zichongli5.r-universe.dev/PRIMAL/doc/vignette.Rnwhttps://zichongli5.r-universe.dev/articles/PRIMAL/vignette.pdf