https://jphill01.r-universe.dev/HACSimhttps://jphill01.r-universe.dev/api/packages/HACSimhttps://jphill01.r-universe.dev/HACSim/HACSim.pdfhttps://jphill01.r-universe.dev/HACSim/doc/manual.htmlhttps://jphill01.r-universe.dev/HACSim/citationhttps://jphill01.r-universe.dev/HACSim/citation.txthttps://jphill01.r-universe.dev/HACSim/citation.cff