Open Access System for Information Sharing

PHYSICAL REVIEW LETTERS, vol. 93, no. 7, 2004-08-13

PHYSICAL REVIEW B, vol. 74, no. 16, 2006-10

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PHYSICAL REVIEW LETTERS, vol. 90, no. 18, 2003-05-09

PHYSICAL REVIEW B, vol. 61, no. 17, page. 11506 - 11509, 2000-05-01