https://cran.r-universe.dev/expectreghttps://cran.r-universe.dev/api/packages/expectreghttps://cran.r-universe.dev/expectreg/expectreg.pdfhttps://cran.r-universe.dev/expectreg/doc/manual.htmlhttps://cran.r-universe.dev/expectreg/citationhttps://cran.r-universe.dev/expectreg/citation.txthttps://cran.r-universe.dev/expectreg/citation.cffhttps://cran.r-universe.dev/expectreg/doc/expectreg.Rnwhttps://cran.r-universe.dev/articles/expectreg/expectreg.pdf