That's sort of their own fault, eh?

What about Bevier's 1987 dissertation, "A Verified Operating System Kernel." ftp://ftp.cs.utexas.edu/pub/boyer/diss/bevier.pdf

After using ANTLR for a class long ago and being so impressed with it, I just returned to ANTLR today. I was shocked at the lack of documentation on the web site. I eventually typed "antlr reference" into google and found the following PDF: http://www.antlr.org/share/1084743321127/ANTLR_Reference_Manual.pdf It's outdated and had many no-longer-supported constructs, but paired with the changes from 2.x to 3.0 it was adequate for what I needed to do. I can see nothing comparable linked from the ANTLR homepage. It seems like an obvious attempt to get you to buy the book. Oh well.