I know click them and see what happens. Man you're slow.
In the process of checking your sources you seem to have misread the report. They're not denying it was AMES strain they're denying.
The report challenged the FBI and U.S. Justice Department’s conclusion that a single-spore batch of anthrax maintained by Ivins at his laboratory at Fort Detrick in Maryland was the parent material for the spores in the letters.
I.e. that Ivins sent the anthrax from one parent material, in other words the person acting alone theory they don't believe, which actually strengthens the CT angle.
As i say a little bit of knowledge is a dangerous thing, google scholars are a pain to deal with, so i'm going to leave you to grasp at straws.