1. Developments and trends in social security, 1981–1983;International Social Security Association,1983
2. Developments and trends in social security, 1984–1986;International Social Security Association,1986
3. Developments and trends in social security, 1987–1989;International Social Security Association,1989
4. General review of problems of medical care delivery under social security in developing countries;Zschock;International Social Security Review,1982
5. Financing and Delivering Health Care: A Comparative Analysis of OECD Countries;Organization for Economic Co-operation and Development (OECD),1987