In this paper, we consider the problem of estimating a semiparametric partially linear varying coefficient model. We derive the semiparametric efficiency bound for the asymptotic variance of the finite-dimensional parameter estimator. We also propose an efficient estimator for estimating the...

Purpose – The purpose of this paper is to analyze the legal complications prevail towards the architecture of mutual policy design between trade and climate change regimes. The recent literature on this topic is mainly focused on commons and has significantly ignored the existing regulatory...

Purpose – The purpose of this paper is to fill the gap between energy and growth literature in Pakistan. In this regard, the authors investigated the environmental Kuznets curve (EKC) hypothesis and concluded the relationship between carbon emission and other four variables (energy...

This paper derives conditions for the existence of fourth moments of multivariate GARCH processes in the general vector specification and gives explicit results for the fourth moments and autocovariances of the squares and cross-products. Results are provided for the kurtosis and co-kurtosis...