1. An International Study of Health Expenditure and its relevance for Health Planning Public Health Papers;Abel-Smith,1967
2. Comparative social research, methodological problems and strategies;Armer,1973
3. Problems in International Comparative Research in the Social Sciences;Berting,1979
4. International Medical Care; a Comparison and Evaluation of Medical Care Services Throughout the World,1972
5. Als in een Spiegel?;Huyse,1983