Rules in change? Births, migrations, cohort replacement and homeostasis in world population: 1950-2100 • Gianpiero Dalla Zuanna, University of Padua ; Francesco C. Billari, Università Bocconi

Migration, retirement, and aging in stable populations • Fernando Riosmena, University of Colorado at Boulder ; Maria E. Winkler-Dworak, Vienna Institute of Demography ; Alexia Fürnkranz-Prskawetz, Vienna University of Technology ; Gustav Feichtinger, Vienna University of Technology

Minimizing the dependency ratio in a population with below-replacement fertility through immigration • Christa Simon, Wittgenstein Centre (IIASA, VID/ÖAW, WU) ; Anton Belyakov, Vienna University of Technology, Institute of Mathematical Methods in Economics ; Gustav Feichtinger, Vienna University of Technology

International migration. A perspective from complexity science • Frans Willekens, Netherlands Interdisciplinary Demographic Institute (NIDI)