https://traminer.r-universe.dev/TraMineRextrashttps://traminer.r-universe.dev/api/packages/TraMineRextrashttps://traminer.r-universe.dev/TraMineRextras/TraMineRextras.pdfhttps://traminer.r-universe.dev/TraMineRextras/doc/manual.htmlhttps://traminer.r-universe.dev/TraMineRextras/NEWShttps://traminer.r-universe.dev/TraMineRextras/NEWS.txthttps://traminer.r-universe.dev/TraMineRextras/citationhttps://traminer.r-universe.dev/TraMineRextras/citation.txthttps://traminer.r-universe.dev/TraMineRextras/citation.cff