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Physica E: Low-dimensional Systems and Nanostructures > 2001 > 11 > 2-3 > 149-154
Physica B: Physics of Condensed Matter > 1996 > 227 > 1-4 > 42-45
Physica E: Low-dimensional Systems and Nanostructures > 2001 > 11 > 2-3 > 149-154
Physica B: Physics of Condensed Matter > 1996 > 227 > 1-4 > 42-45