https://cran.case.edu/web/packages/h3sdm/index.html
CRAN: Package h3sdm
cranpackage
https://cran.stat.auckland.ac.nz/web/packages/h3sdm/index.html
CRAN: Package h3sdm
cranpackage
https://cran.ms.unimelb.edu.au/web/packages/h3sdm/index.html
CRAN: Package h3sdm
cranpackage