The Industrial Automaton company produced a line of droid brains called Intellex, which were implemented in their astromech droids. This line consisted of models such as the Intellex ship-configuration computer, the Intellex II, the Intellex III, the Intellex IV, the Intellex V, as well as the Intellex VI.
- " The History of R-Series Astromech Droids " — Star Wars Adventure Journal 7
- " Cracken's Rebel Field Guide: Slicing Aids " — Star Wars Adventure Journal 10
- The Essential Guide to Droids
- The Official Star Wars Fact File 21 (AST 1-2: P2 and R1 Astromech Droids)
- The Complete Star Wars Encyclopedia