Frans Willekens

Netherlands Interdisciplinary demographic Institute

Field of Study: Demographie
Specialization: Estimations et projections, Migration internationale
Education: Doctorat (Ph.D, MD), Northwestern University, Urban Systems Engineering, 1976
Working languages: Anglais
Professional Summary:

Senior Research Scientist, Max Planck Institute for Demographic Research, Rostock, Germany. 

Emeritus Professor of Population Studies, University of Groningen and Honorary Fellow at the Netherlands Interdisciplinary Demographic Institute (NIDI) ( Member of Royal Netherlands Academy of Arts and Sciences (KNAW). Director of NIDI from 2003 to 2010. Founded the Population Research Centre at University of Groningen. Cooperated with other demographers to established the European Doctoral School of Demography (EDSD).

Research interest: international migration, population projection, micro-simulation of life histories. Biographic models produce synthetic biographies that combine into synthetic populations, a virtual world based on empirical evidence. Frans Willekens holds a PhD in Urban Systems Engineering and Policy Planning from the Technological Institute, Northwestern University, Evanston, Illinois, USA (1976).


Biograph, Computer package for multistate life history data analysis,   Available at:

J. Raymer and F. Willekens eds. (2008) International migration in Europe. Data, models and estimates. Wiley, Chichester 

Willekens, F. (2011) Microsimulation in population projection. Cahiers québécois de démographie, 40(2):267-297. Special issue on Microsimulation in Demography, edited by L. Martel, E.C. Malenfant and A. Bélanger. Available at

Willekens, F. (1994) Monitoring international migration in Europe. Towards a statistical data base combining data from different sources, European Journal of Population, 10(1):1-42.

Willekens, F. (2009) Continuous-time microsimulation in longitudinal analysis. In: A. Zaidi, A. Harding and P. Williamson eds. New frontiers in microsimulation modelling. Ashgate, Surrey, UK, pp. 413-436.

Biograph Package iin R for multistate life history analysis. Published in Comprehensive R Archive (CRAN), January 2011; Version 2 in 2012.