Sobhee, Sanjeev - In: Applied Economics Letters 11 (2004) 7, pp. 449-452
This study argues that the environmental Kuznets curve (EKC) can be shaped as a logistic curve rather than a mere quadratic equation. Instead of being modelled as a polynomial of degree two, the EKC can be characterized by a polynomial of degree three. The inverted-U shape remains. However, in...