R http://www.ievbras.ru/ecostat/Kiril/R/Biblio/R_eng/R%20dummies.pdf

http://www.ievbras.ru/ecostat/Kiril/R/Biblio/R_eng/R%20dummies.pdf


https://cran.r-project.org/bin/windows/base/rw-FAQ.html#Should-I-run-32_002dbit-or-64_002dbit-R_003f