1. Evaluating locations for outpatient medical care facilities;Christianson;Land Econ.,1976
2. An econometric application of the theory of the farm-household;Barnum;J. Dev. Econ.,1979
3. Statistical Analysis System (SAS) Users Guide;SAS Institute,1979
4. Clustering and Aggregation in Economics;Fisher,1969
5. The effect of health manpower regulations in productivity in medical practices;Smith,1981