J. Phys.: Cond. Matt. 2002; 14:L678-L686
https://iopscience.iop.org/article/10.1088/0953-8984/14/41/102/fulltext/© Research
Publication : Journal of Physics: Condensed Matter
J. Phys.: Cond. Matt. 2002; 14:L678-L686
https://iopscience.iop.org/article/10.1088/0953-8984/14/41/102/fulltext/