4Yusta J M, Ramlrez-Rosado I J, Dominguez-Navarro J A, et al. Optimal electricity price calculation model for retailers in a deregulated market[J]. Electrical Power and Energy Systems, 2005, 27(5-6): 437-447.
5Hatami A R, Seifi H, Sheikh-El-Eslami M K. Optimal selling price and energy procurement strategies for a retailer in an eleetricity market[J]. Electric Power Systems Research, 2009, 79(1): 246-254.
6Honma S, Hu J L. Total-factor energy efficiency of regions in Japan[J]. Energy Policy, 2008, 36(2): 821-833.
7YUSTA J M, RAMIREZ-ROSADO I J, DOMINGUEZ-NA- VARRO J A, et al. Optimal electricity price calculation mod- el for retailers in a derelated market [ J ]. Electrical Power and Energy Systems, 2005, 27:437 - 447.
8HATAMI A R, SEIFI H, SHEIKH-EL-ESLAMI M K. Opti- mal selling price and energy procurement strategies for a re- tailer in an electricity market[ J]. Electric Power Systems Re- search, 2009, 79:246 - 254.