Open Science Research Excellence
Alexander Y. Vaninsky,  Environmental Efficiency of Electric Power Industry of the United States: A Data Envelopment Analysis Approach.   journal   = {International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2008, vol. 16(4). 509 - 515[viewed 23 May 2019]. Available from: http://waset.org/publications/8993.