https://cran.r-project.org/src/contrib/Archive/sbtools/?C=S;O=A
Index of /src/contrib/Archive/sbtools
index ofsrccontribarchive
https://cran.ma.imperial.ac.uk/web/checks/check_results_sbtools.html
CRAN Package Check Results for Package sbtools
check resultscranpackage
https://cran.case.edu/web/packages/sbtools/index.html
CRAN: Package sbtools
cranpackage