However, I was very disappointed. First, the problematic references. Lester refers to the seemingly authorless The Origins of the Koran. One can only assume his goals have remained unchanged, and one can only question the validity of such types of writing. Indeed, one of his own references in that earlier book distanced herself in no uncertain terms from his misrepresentation of her work.
Details are available at the web address listed above.
Also out of print are the books by John Wansbrough referenced in the article. In the beginning of the article Lester discusses issues that would involve the possibility of a historical development to the Qur'anic text that continued after Muhammad's death. In both arenas, the article raised for me more questions than it answered. Questions pertaining to the author's grasp of both topics. They are not the same.