Submitted on: 05 June 2000.
Revised on: 11 August 2000.
Accepted on: 08 October 2000.
___________________Beilstein Journal of Nanotechnology
Submitted on: 13 May 1999.
Revised on: 26 August 1999.
Accepted on: 19 October 1999.
___________________Beilstein Journal of Nanotechnology
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Submitted on: 06 October 2000.
Revised on: 26 October 2000.
Accepted on: 17 November 2000.
___________________Beilstein Journal of Nanotechnology
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Submitted on: 15 January 2010.
Revised on: 26 April 2010.
Accepted on: 22 June 2010.
___________________Beilstein Journal of Nanotechnology
Submitted on: 24 April 2002.
Revised on: 09 July 2002.
Accepted on: 01 September 2002.
___________________Beilstein Journal of Nanotechnology
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Submitted on: 13 May 2014.
Revised on: 26 June 2014.
Accepted on: 18 July 2014.
___________________Beilstein Journal of Nanotechnology