Acrynoms for "roles": Use Code List of Relators (e.g. "dtm" -> "data manager", "rev" -> Reviewer)

[mrustl]

see: http://www.loc.gov/marc/relators/relaterm.html

E.g. in R packages (http://r-pkgs.had.co.nz/description.html#author), but also in general at KWB