https://pbs-software.r-universe.dev/PBSmappinghttps://pbs-software.r-universe.dev/api/packages/PBSmappinghttps://pbs-software.r-universe.dev/PBSmapping/PBSmapping.pdfhttps://pbs-software.r-universe.dev/PBSmapping/doc/manual.htmlhttps://pbs-software.r-universe.dev/PBSmapping/citationhttps://pbs-software.r-universe.dev/PBSmapping/citation.txthttps://pbs-software.r-universe.dev/PBSmapping/citation.cffhttps://pbs-software.r-universe.dev/PBSmapping/doc/PBSmappingIntro.Rnwhttps://pbs-software.r-universe.dev/articles/PBSmapping/PBSmappingIntro.pdf