https://barryzee.r-universe.dev/HTGM3Dhttps://barryzee.r-universe.dev/api/packages/HTGM3Dhttps://barryzee.r-universe.dev/HTGM3D/HTGM3D.pdfhttps://barryzee.r-universe.dev/HTGM3D/doc/manual.htmlhttps://barryzee.r-universe.dev/HTGM3D/citationhttps://barryzee.r-universe.dev/HTGM3D/citation.txthttps://barryzee.r-universe.dev/HTGM3D/citation.cffhttps://barryzee.r-universe.dev/HTGM3D/doc/HTGM3D.Rmdhttps://barryzee.r-universe.dev/articles/HTGM3D/HTGM3D.html