J. Palsberg and C. B. Jay. The Essence of the Visitor Pattern. In Proceedings of COMPSAC'98, 22nd Annual International Computer Software and Applications Conference, pages 9-15, Vienna, Austria, August 1998.

B. J. Lucier, S. Mamillapalli, and J. Palsberg. Program Optimization for Faster Genetic Programming. In J. R. Koza, et al, editor, Proceedings of Genetic Programming 1998: Proceedings of the Third Annual Conference, pages 202-207, Morgan Kaufmann, 1998.

L. Seiter, J. Palsberg, and K. Lieberherr. Evolution of Object Behavior Using Context Relations. IEEE Transactions on Software Engineering, 24(1):79-92, 1998.

J. Palsberg and C. Pavlopoulou. From Polyvariant Flow Information to Intersection and Union Types. In Proceedings of POPL'98, 25th Annual SIGPLAN-Sigact Symposium on Principles of Programming Languages, pages 197-208, San Diego, CA, January 1998.

P. Orbaek and J. Palsberg. Trust in the Lambda-Calculus. Journal of Functional Programming, 7(6):557-591, November 1997.

J. Palsberg and T. Jim. Type Inference With Simple Selftypes is NP-Complete. Nordic Journal of Computing, 4(3):59-286, September 1997.

J. Palsberg, B. Patt-Shamir, and K. Lieberher. A New Approach to Compiling Adaptive Programs. Science of Computer Programming, 29(3):303-326, September 1997.

J. Palsberg, A. Aiken, and E. L. Wimmers. Optimal Representations of Polymorphic Types with Subtyping. In Proceedings of TACS'97, International Symposium on Theoretical Aspects of Computer Software, pages 47-76, Springer-Verlag (LNCS 1281), Sendai, Japan, September 1997.