https://emdelponte.r-universe.dev/r4pdehttps://emdelponte.r-universe.dev/api/packages/r4pdehttps://emdelponte.r-universe.dev/r4pde/r4pde.pdfhttps://emdelponte.r-universe.dev/r4pde/doc/manual.htmlhttps://emdelponte.r-universe.dev/r4pde/NEWShttps://emdelponte.r-universe.dev/r4pde/NEWS.txthttps://emdelponte.r-universe.dev/r4pde/citationhttps://emdelponte.r-universe.dev/r4pde/citation.txthttps://emdelponte.r-universe.dev/r4pde/citation.cff