3唐镇(Tang Zhen).农网改造项目后评价理论方法及应用研究 (The evaluation theory method and application research on rural distribution network retrofit project) [D].北京:华北电力大学(Seijing: North China E- lectric Power University) , 2003.
4郭喜庆,翟向向.县级农村电网建设与改造技术研究报告(Technology re- search report on rural power grid construction and retrofit) [R].北京:华北电网有限公司(Seijing: North Chi- na Power Grid) , 2003.
5Rouse W B, Boff K R, Sutiry Thomas B G. Assessing cost benefits of research and development investments [J]. IEEE Transactions on Systems, Man and Cybernet- ics-Part A: Systems and Humans, 1997, 27 (4) : 389- 401.
6张文泉(Zhang Wenquan).电力技术经济评价理论、方法与应用 (The evaluation theory method and applica- tion on electric power technology economic) [M].北京:中国电力出版社( Beijing : China Electric Power Press), 2004.