4Evers, A. , Shifts in the Welfare Mix : Introducing a New Approach for the Study of Transformation in Welfare and Social Policy. In Evers. A. & Wintersberger, H. (Ed). Shifts in the Welfare Mix: Their Impact on Work, Social Services and Welfare Policies. Eurosocial, Vienna. 1988.
5Johnson, N. , The Welfare State in Transition : The Theory and Practice of Welfare Pluralism. Amherst : University Massachusetts Press. 1987.