1. Aho, A., Hopcroft, J., and Ullman, J., Design and Analysis of Computer Algorithms, Addison-Wesley, 1974.
2. Borstler, J., Moncke, U., and Wilhelm, R., Table Compression for Tree Automata, Lehrstuhl fur Informatik III, Universitat des Saarlandes, 1987.
3. Burghardt, J., “A Tree Pattern Matching Algorithm with Reasonable Space Requirements,” in Proc. CAAP '88, ed. M. Daudet and M. Nivat, Lecture Notes in Computer Science, vol. 299, pp. 1–15, Springer-Verlag, 1988.
4. Cai, J. and Paige, R., “The RAPTS Transformational System — A Proposal For Demonstration,” in ESOP '90 Systems Exhibition, May 1990.
5. Chase, D., “An improvement to bottom-up tree pattern matching,” in Proc. Fourteenth Annual ACM Symposium on Principles of Programming Languages, pp. 168–177, January, 1987.