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http://reply.papertrans.cn/3/278/27765/27765-12.png
Submitted on: 04 August 2001.
Revised on: 17 August 2001.
Accepted on: 22 August 2001.
Semiconductor Physics Quantum Electronics & Optoelectronics
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Submitted on: 11 January 2000.
Revised on: 18 January 2000.
Accepted on: 27 January 2000.
Semiconductor Physics Quantum Electronics & Optoelectronics
Submitted on: 14 July 2009.
Revised on: 26 August 2009.
Accepted on: 16 September 2009.
Semiconductor Physics Quantum Electronics & Optoelectronics
Submitted on: 20 July 2009.
Revised on: 18 August 2009.
Accepted on: 02 September 2009.
Semiconductor Physics Quantum Electronics & Optoelectronics
Submitted on: 26 March 2011.
Revised on: 03 May 2011.
Accepted on: 15 May 2011.
Semiconductor Physics Quantum Electronics & Optoelectronics
Submitted on: 08 June 2013.
Revised on: 18 July 2013.
Accepted on: 28 July 2013.
Semiconductor Physics Quantum Electronics & Optoelectronics