https://loukesio.r-universe.dev/ltchttps://loukesio.r-universe.dev/api/packages/ltchttps://loukesio.r-universe.dev/ltc/ltc.pdfhttps://loukesio.r-universe.dev/ltc/doc/manual.htmlhttps://loukesio.r-universe.dev/ltc/NEWShttps://loukesio.r-universe.dev/ltc/NEWS.txthttps://loukesio.r-universe.dev/ltc/citationhttps://loukesio.r-universe.dev/ltc/citation.txthttps://loukesio.r-universe.dev/ltc/citation.cff