1. Ahmad , N. A. Wyckoff 2003 Carbon dioxide emissions embodied in international trade of goods. STI working paper 2003/15. Organisation for Economic Cooperation and Development (OECD), Directorate for Science Technology and Industry, Paris
2. Characteristics of households' energy consumption (in Japanese);Aoyagi;Energy and Resources,1995
3. Incorporating undesirable outputs into models of production: An application to US agriculture;Ball;Cabiers d'economie et sociologie rurales [Rural Economics and Sociology Letters],1994
4. Auditing energy use in cities;Bennett;Energy Policy,2001
5. Environmental efficiency analysis for ENI oil refineries;Bevilacqua;Journal of Cleaner Production,2002