Zapata, Hector O.; Paudel, Krishna P. - Agricultural and Applied Economics Association - AAEA - 2005
Numerous studies have addressed the question of the econometric specification of the Environmental Kuznets Curve (EKC). This paper adds preliminary results on nonstationarity and its effect on functional form using a panel data set for the U.S. by state from 1929 to 1994. It is found that...