Authentic? Not authentic? Not authentic, again! Discussion

In his new monograph Edward L. Keenan ascribes the authorship of the 'Tale of the Host of Igor"' to the eighteenth-century Czech Slavicist Josef Dobrovsky. Keenan employs some of the same methodologies and concepts to impugn the authenticity of the Igor' Tale as he did over thirty years ago in questioning the authenticity of the Ivan IV-Prince Andrei Kurbskii Correspondence. However in the case of the Igor' Tale he places most of his emphasis on linguistic evidence of Bohemisms and anachronisms in the Tale. His monograph has generated a lively debate, in which his critics have raised serious objections to his arguments and attribution.