https://roigrp.r-universe.dev/ROI.plugin.lpsolvehttps://roigrp.r-universe.dev/api/packages/ROI.plugin.lpsolvehttps://roigrp.r-universe.dev/ROI.plugin.lpsolve/ROI.plugin.lpsolve.pdfhttps://roigrp.r-universe.dev/ROI.plugin.lpsolve/doc/manual.htmlhttps://roigrp.r-universe.dev/ROI.plugin.lpsolve/citationhttps://roigrp.r-universe.dev/ROI.plugin.lpsolve/citation.txthttps://roigrp.r-universe.dev/ROI.plugin.lpsolve/citation.cff