来源:Journal of the Korean Physical Society, 2018, 72(5): 645-645.
DOI:10.3938/jkps.72.645
摘要
The submittied date of this paper should be corrected. It should be written as "Received 20 March 2017, in final form 13 July 2017" instead of "Received 25 May 2017, in final form 13 July 2017".