ANTLR 3 book by Terence Parr.
ANTLR Parser Generator
ANTLR: ANother Tool for Language Recognition, (formerly PCCTS) is a language tool that provides a framework for constructing recognizers, compilers, and translators from grammatical descriptions containing Java, C#, C++, or Python actions.
Placid Systems - ANTLR Studio
ANTLR plugin for Eclipse
ANTLR - Notes from University Of Birmingham
Notes on parsing C++
The Hibernate HQL grammar and tree walker
ANTLR C++ Grammar
LL and LR Translator Need k
Translator For Python's BNF Grammar to ANTLR syntax
Older article on ANTLR lexer
More antlr lessons
SourceForge.net: Project Info - ANTLR plugin for Eclipse
ANTLR Tree Parsers
Why tree grammars are superior to the visior pattern. One well known tree processing language is XSLT.
Why Use ANTLR?
antlr - an overnight success after all those years!
antlr ruby grammar
InfoQ: Google SoC Series: ANTLR v3 Ruby Parser