1. On the definition and the computation of the basic reproduction ratio R ₀ in models for infectious diseases in heterogeneous populations

   • O. Diekmann
   • J. A. P. Heesterbeek
   • J. A. J. Metz

   OriginalPaper Pages: 365 - 382

2. Perfect harmony: the discrete dynamics of cooperation

   • W. Krawcewicz
   • T. D. Rogers

   OriginalPaper Pages: 383 - 410

3. Threshold and stability results for an age-structured epidemic model

   • H. Inaba

   OriginalPaper Pages: 411 - 434

4. Mendelian segregation: a choice between “order” and “chaos”

   • Uri Liberman

   OriginalPaper Pages: 435 - 449

5. Models for the spread of universally fatal diseases

   • F. Brauer

   OriginalPaper Pages: 451 - 462

6. Global stability of Gause-type predator-prey systems

   • Y. Kuang

   OriginalPaper Pages: 463 - 474

7. Second-order approximations for selection coefficients at polygenic loci

   • Alan Hastings

   OriginalPaper Pages: 475 - 483

8. Announcement

   Announcement Pages: 485 - 485