https://jli-stat.r-universe.dev/SparseDChttps://jli-stat.r-universe.dev/api/packages/SparseDChttps://jli-stat.r-universe.dev/SparseDC/SparseDC.pdfhttps://jli-stat.r-universe.dev/SparseDC/doc/manual.htmlhttps://jli-stat.r-universe.dev/SparseDC/citationhttps://jli-stat.r-universe.dev/SparseDC/citation.txthttps://jli-stat.r-universe.dev/SparseDC/citation.cffhttps://jli-stat.r-universe.dev/SparseDC/doc/SparseDC.Rmdhttps://jli-stat.r-universe.dev/articles/SparseDC/SparseDC.html