Forgive my thick skull, but I've only figured out that;
AST = Aerodynamic Streaming Template
As found here:
http://ecomodder.com/forum/showthrea...c-9287-54.html
And I've figured out that R. Buchheim is an author of aerodynamic works, but I don't know what his specific contribution is and the importance of his name as a reference is.
Given time I could probably figure it out, but spelling it out will help me.