1. Semantics of context-free languages
2. ‘On attribute grammars and their use in a compiler writing system’, Department of Computer Science, University of Helsinki, Report A-1977–4, 1977.
3. Contour
4. and , ‘GAG: a practical compiler-generator’, Lecture Notes in Computer Science 141, Springer-Verlag, 1982.
5. Compiler Writing System for Attribute Grammars