By Hong Mengqing   Wang Yongqiang   Ren Feng   Zhang Hongxiu   Fu Dejun   Yang Bing   Xiao Xiangheng   Jiang Changzhong   in EPL (EUROPHYSICS LETTERS)

ISSN:0295-5075|106|1|12001-12001

Edp Sciences‎(2014)‎

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