Physica E: Low-dimensional Systems and Nanostructures
Physica E: Low-dimensional Systems and Nanostructures > 2000 > 6 > 1-4 > 260-263
Physica E: Low-dimensional Systems and Nanostructures > 2004 > 22 > 1-3 > 218-223
Physica E: Low-dimensional Systems and Nanostructures > 2004 > 22 > 1-3 > 320-323