Submitted on: 05 February 2007.
Revised on: 10 March 2007.
Accepted on: 22 March 2007.
Physica Status Solidi-Rapid Research Letters
Submitted on: 11 February 2023.
Revised on: 20 February 2023.
Accepted on: 12 March 2023.
Physica Status Solidi-Rapid Research Letters
Submitted on: 10 April 2009.
Revised on: 17 April 2009.
Accepted on: 24 April 2009.
Physica Status Solidi-Rapid Research Letters
http://reply.papertrans.cn/3/246/24590/24590-34.png
http://reply.papertrans.cn/3/246/24590/24590-35.png
Submitted on: 03 November 1998.
Revised on: 02 December 1998.
Accepted on: 11 December 1998.
Physica Status Solidi-Rapid Research Letters