Open Access System for Information Sharing

MODERN PHYSICS LETTERS B, vol. 13, no. 26, page. 925 - 932, 1999-11-10

MODERN PHYSICS LETTERS B, vol. 10, no. 9, page. 401 - 407, 1996-04-20

PHYSICS LETTERS A, vol. 226, no. 1-2, page. 17 - 21, 1997-02-10

PHYSICAL REVIEW B, vol. 56, no. 8, page. 4825 - 4829, 1997-08-15

PHYSICAL REVIEW A, vol. 50, no. 6, page. 5320 - 5323, 1994-12