References
- Borland , M. V. and Howsen , R. M. 1992 . Student academic achievement and the degree of market concentration in education . Economics of Education Review , 11 : 31 – 39 .
- Borland , M. V. and Howsen , R. M. 1993 . On the determination of the critical level of market concentration in education . Economics of Education Review , 12 : 166 – 169 .
- Hanushek , E. A. 1991 . When school finance reform may not be good policy . in Harvard Journal on Legislation , 28 ( 2 ) : 423 – 456 .
- Hoxby , C. M. 1994 . Do private schools provide competition for public schools? , Harvard . Mimeo
- Koutsoyiannis , A. 1977 . Theory of Econometrics, , 2nd edn , London : Macmillan .
- Maddala , G. S. 1988 . Introduction to Econometrics , New York : Macmillan .
- Sander , W. 1993 . Expenditures and student achievement in Illinois . Journal of Public Economics , 52 : 403 – 416 .