Zitelmann criticised Irving in the liberal German weekly "Die Zeit" on 6 October 1989 by questioning the fact that Irving had said “not without a certain hubris... that he sees no need to pay any mind to the academic debate and research findings of the 'old school historians' he detests". Zitelmann criticised specifically that Irving had deleted the word "extermination camp" from the new edition of his Hitler biography and that he now appeared to share the notions entertained by revisionist historians. "This entire development", as Zitelmann said in "Die Zeit", “has so far not been adequately acknowledged and addressed by West German historians". He called on the historians to be more "aggressive" in critically engaging Irving.