Complex sentence: Chesnut has had some detractors, notably the Johns Hopkins University history professor Kenneth S. Lynn, who denounced her work as a "hoax" and a "fabrication" in a 1981 "New York Times" review of Woodward's edition of the diaries.
Split into simpler sentences: Chesnut has had some detractors, notably history professor Kenneth S. Lynn, of Johns Hopkins University. He described her work as a "hoax" and a "fabrication" in a 1981 "New York Times" review of Woodward's edition of the diaries.