JOURNAL OF HIGH ENERGY PHYSICS, vol. 0908, no. 8, page. 47, 2009-08
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 53, no. 2, page. 1232 - 1236, 2008-08
JOURNAL OF HIGH ENERGY PHYSICS, vol. 0610, no. 10, page. 26, 2006-10