number of observations : 506
observation : regional
country : United States
data(Hedonic)
Belsley, D.A., E. Kuh and R. E. Welsch (1980): Regression Diagnostics: Identifying Influential Data and Sources of Collinearity, John Wiley, New York.
Harrison, D. and D.L. Rubinfeld (1978): Hedonic housing prices and the demand for clean air, Journal of Environmental Economics and Management, 5(1), pp. 81--102.