Submitted on: 01 September 2008.
Revised on: 09 September 2008.
Accepted on: 23 September 2008.
Laser & Photonics Reviews---WILEY-V C H VERLAG GMBH
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Submitted on: 13 November 2007.
Revised on: 18 December 2007.
Accepted on: 03 January 2008.
Laser & Photonics Reviews---WILEY-V C H VERLAG GMBH
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Submitted on: 02 September 1999.
Revised on: 08 October 1999.
Accepted on: 22 October 1999.
Laser & Photonics Reviews---WILEY-V C H VERLAG GMBH
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