Project supported by the National Natural Science Foundation of China(11071184);the National Natural Science Foundation of Shanxi Province of China(2012011015-6)
Project supported by the National Natural Science Foundation of China(11071184);the National Natural Science Foundation of Shanxi Province of China(2012011015-6)
Supported by the NSF of China (11071184);the NSF of Shanxi Province (20120110156);the Science and Technology Development Project of Higher Education in Shanxi (20101112)