Rails Internationalization (I18n) API — Ruby on Rails Guides
256 I18n Backends - RailsCasts
Ruby i18n - internationalization for ruby
The Complete Guide to Rails Internationalization (i18n)
Josef Strzibny on Twitter: "How to 🌎 localize a Ruby on Rails application and work with translations day to day? Let me tell you. I work on Phrase Strings, a localization platform