All the latest articles are chock full of much-needed references.
Aebischer, Silvio (~2000).
Vykkers Labs side view colour painting. In Cathy Johnson & Daniel Wade (eds) (15/09/2004). ‘Industrial Vehicles’, ‘Oddworld: Munch’s Oddysee’, p. 194.
The Art of Oddworld Inhabitants: The First Ten Years 1994–2004. Mylor: Ballistic Publishing.