PHYSICS LETTERS A, vol. 368, no. 5, page. 402 - 407, 2007-08-27
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 39, no. 5, page. 848 - 853, 2001-11
JOURNAL DE PHYSIQUE IV, vol. 11, no. PR2, page. 225 - 231, 2001-07
JOURNAL OF THE CHINESE CHEMICAL SOCIETY, vol. 48, no. 3, page. 427 - 432, 2001-06
PHYSICAL REVIEW A, vol. 63, no. 2, page. 23806 - 23806, 2001-02