https://ang-yu.r-universe.dev/cdgdhttps://ang-yu.r-universe.dev/api/packages/cdgdhttps://ang-yu.r-universe.dev/cdgd/cdgd.pdfhttps://ang-yu.r-universe.dev/cdgd/doc/manual.htmlhttps://ang-yu.r-universe.dev/cdgd/NEWShttps://ang-yu.r-universe.dev/cdgd/NEWS.txthttps://ang-yu.r-universe.dev/cdgd/citationhttps://ang-yu.r-universe.dev/cdgd/citation.txthttps://ang-yu.r-universe.dev/cdgd/citation.cff