1. Christian, J.:Flatterms, discrimination nets, and fast term rewriting, JAR 10, 1993, pp. 95–113.
2. Denzinger, J.; Fuchs, M.:Goal oriented equational theorem proving using teamwork, Proc. 18th KI-94, Saarbrücken, GER, Springer LNAI 861, 1994, pp. 343–354.
3. Fuchs, M.:Powerful Search Heuristics Based on Weighted Symbols, Level and Features, Proc. FLAIRS '96, Key West, FL, USA, 1996, pp. 449–453.
4. Fuchs, M.:Experiments in the Heuristic Use of Past Proof Experience, Proc. CADE-13, New Brunswick, NJ, USA, 1996, Springer LNAI 1104, pp. 523–537.
5. Graf P.:Term Indexing, Springer Verlag, Springer LNAI 1053, 1995.