Institution: | (1) College of Physics and Engineering, Qufu Normal University, Qufu, 273165, P.R. China;(2) Institute of Physics and Electronics, 10 Dao Tan, Thu Le, Ba Dinh, Hanoi, Vietnam;(3) School of Computational Sciences, Korea Institute for Advanced Study, 207-43 Cheongryangni 2-dong, Dongdaemun-gu, Seoul, 130-722, Korea |