" Irving's reputation can be seen in the surveys of the historiography of the Third Reich produced by Ian Kershaw. In the first edition of Kershaw's book The Nazi Dictatorship in 1985, Irving was called a "maverick" historian working outside the mainstream of the historical profession.[133] By the time of the fourth edition of The Nazi Dictatorship in 2000, Irving was described only as a historical writer who had in the 1970s engaged in "provocations" intended to provide an "exculpation of Hitler's role in the Final Solution".[134]"

From wiki but with sources.
What has he to do with any of the highly acclaimed historians I have cited?