I want to know the answer to the following question:
Who's work undermined Douglass  Coopers terms describing Cubism?
All the background I'm provided with is that "More fundamentally, Christopher Green argues that Douglas Cooper's terms were "later undermined by interpretations of the work of Picasso, Braque, Gris and Léger that stress iconographic and ideological questions rather than methods of representation."". Is that enough to answer the question?