This page presents various resources about bibtex in general.
http://maverick.inria.fr/~Xavier.Decoret/resources/xdkbibtex/bibtex_summary.html
- Comments
- Variable
- @preamble
- Name convention
Put the letter/word in curly braces like {this}.
- http://tug.ctan.org/tex-archive/info/bibtex/tamethebeast/ttb_en.pdf
- http://ctan.mirrors.hoobly.com/macros/latex/contrib/biblatex/doc/biblatex.pdf
Here are some interesting projects using bibtex but not necessarily this parser.