https://www.nber.org/system/files/chapters/c14574/c14574.pdf
https://towardsdatascience.com/put-your-data-analysis-in-an-r-package-even-if-you-dont-publish-it-64f2bb8fd791
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20058en.pdf