Sustainability of a typical biogas system in China: Emergy-based ecological footprint assessment. - X. F. Wu; Qing Yang; X. H. Xia; T. H. Wu; X. D. Wu; L. Shao; Tasawar Hayat; Ahmed Alsaedi; Guo-Qian Chen (Ecol. Informatics, 2015)

Structure decomposition analysis for energy-related GHG emission in Beijing: Urban metabolism and hierarchical structure. - X. H. Xia; Y. Hu; Ahmed Alsaedi; Tasawar Hayat; X. D. Wu; G. Q. Chen (Ecol. Informatics, 2015)