- Brill, Eric. "Automatic Grammar Induction and Parsing of Free Text"
- Crocker, Mathew. "Inside and Outside Probabilities and Viterbi Parsing"
- Dupont, P. "Inductive and Statisstical Learning of Formal Grammars"
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- Tasker, B., Klein, D., Collins, M., Koller, D., Manning, C. "Maximum-Margin Parsing"
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- Lieberman, Henry. Grammex
- Flex Man Page from GNU, a Lex-like scanner generator
- Graphviz, a program that produces graphical diagrams