Sun, Dingqiang; Bai, Junfei; Qiu, Huanguang; Cai, Yaqing - In: Energy Policy 73 (2014) C, pp. 748-756
In this paper, we evaluate empirically the impact of biogas subsidies on household biogas energy use in rural China. Special attention was given to the problem of sample selection bias in assessing the impact of subsidies on biogas energy use because biogas subsidies often change the propensity...