JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 48, page. S179 - S185, 2006-02
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 46, no. 4, page. L741 - L746, 2005-04
PHYSICAL REVIEW E, vol. 69, no. 1, 2004-01
PHYSICA A, vol. 288, no. 1-4, page. 380 - 396, 2000-12-15
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, vol. 8, no. 4, page. 731 - 739, 1998-04
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, vol. 7, no. 4, page. 889 - 895, 1997-04
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 29, no. 1, page. 9 - 16, 1996-02