1. Information

   Announcement Pages: 323 - 323

2. A model for population regulation with density- and frequency-dependent selection

   • Ebbe Thue Poulsen

   OriginalPaper Pages: 325 - 343

3. Delays in physiological systems

   • U. an der Heiden

   OriginalPaper Pages: 345 - 364

4. Asymptotic behavior and stability in four models of venereal disease

   • H. E. Wichmann

   OriginalPaper Pages: 365 - 373

5. Deterministic single-locus density-dependent selection

   • Hans-Rolf Gregorius

   OriginalPaper Pages: 375 - 391

6. Unlinked strands as a topological constraint on chromosomal DNA, plasmid integration, and DNA repair

   • Hans J. Bremermann

   OriginalPaper Pages: 393 - 401

7. Input-output relationship of the Leaky-Integrator Neuron Model

   • Hans Scharstein

   OriginalPaper Pages: 403 - 420