Frank Drewes, Joost Engelfriet: Decidability of the Finiteness of Ranges of Tree Transductions. Information and Computation 145:1-50, 1998.
Frank Drewes: A Characterization of the Sets of Hypertrees Generated by Hyperedge-Replacement Graph Grammars. Theory of Computing Systems 32:159-208, 1998.
Frank Drewes: TREEBAG - a Tree-Based Generator for Objects of Various Types. Report 1/98, Univ. Bremen, 1998.
Frank Drewes: Tree-Based Picture Generation. Report 7/98, Univ. Bremen, 1998. Revised version to appear in Theoretical Computer Science.
Frank Drewes: Treebag - Baum-basierte Generierung und Transformation von Objekten. In J. Dassow, R. Kruse, editors, Proc. Informatik '98, Informatik Aktuell, pages 47-56. 1998. In German.
Annegret Habel, Renate Klempien-Hinrichs: Atom Replacement in Hypergraphs. In G. Engels, G. Rozenberg, editors, Preproc. TAGT'98, Bericht tr-ri-98-201, Reihe Informatik, pages 182-189. Universität-GH Paderborn, 1998.
Renate Klempien-Hinrichs: Net Refinement by Pullback Rewriting. In M. Nivat, editor, Proc. Foundations of Software Science and Computation Structures, volume 1378 of Lecture Notes in Computer Science, pages 189-202. Springer, 1998.
Sigrid Ewert, Andries van der Walt: Generating Pictures using Random Forbidding Context. International Journal of Pattern Recognition and Artificial Intelligence 12:939-950, 1998.
Sigrid Ewert, Andries van der Walt: Permission Is Necessary When Generating Pictures. In Proc. 13th Annual MSc and PhD Conference in Computer Science, pages 18-26. Department of Computer Science, University of Stellenbosch, South Africa, 1998. Full paper in International Journal of Pattern Recognition and Artificial Intelligence 13.
Hélène Jacquet, Renate Klempien-Hinrichs: Node Replacement in Hypergraphs: Translating NCE Rewriting into the Pullback Approach. In G. Engels, G. Rozenberg, editors, Preproc. TAGT'98, pages 174-181. 1998. Universität-GH Paderborn, Bericht tr-ri-98-201, Reihe Informatik. Revised version appeared in LNCS 1764.
Aglaia Giotaki: Syntaktische Dimension von Collagen-Grammatiken. Dissertation. Universität Bremen, 1998.
Hans-Jörg Kreowski: Künstliche Intelligenz und Gehirn. In H.J. Sandkühler, editor, Repräsentation, Denken und Selbstbewusstsein, volume 20 of Schriftenreihe des Zentrums Philosophische Grundlagen der Wissenschaften, pages 193-204. Universität Bremen, 1998.
Reiko Heckel, Berthold Hoffmann, Peter Knirsch, Sabine Kuske: Simple Modules for GRACE. In Hartmut Ehrig, Gregor Engels, Hans-Jörg Kreowski, Grzegorz Rozenberg, editors, Theory and Application of Graph Transformations, 6th International Workshop, TAGT'98, Paderborn, Germany, November 16-20, 1998, Selected Papers, volume 1764 of Lecture Notes in Computer Science, pages 383-395. Springer, 1998.
