Submitted on: 21 June 2003.
Revised on: 26 July 2003.
Accepted on: 16 August 2003.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
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Submitted on: 29 August 2002.
Revised on: 30 September 2002.
Accepted on: 06 October 2002.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Submitted on: 24 September 2021.
Revised on: 13 October 2021.
Accepted on: 28 October 2021.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Submitted on: 19 June 2001.
Revised on: 24 July 2001.
Accepted on: 03 August 2001.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES