1. Determinants of relief policy at the subfederal level;Albin;Southern Economic Journal,1981
2. Work and welfare: An analysis of AFDC participation rates in Delaware;Bieker;Social Science Quarterly,1981
3. The demand for general assistance payments;Brehm;American Economic Review,1964
4. Generating models by the expansion method: Applications to geographic research;Casetti;Geographical Analysis,1972
5. Mathematical modelling and the expansion method;Casetti,1982