JOURNAL OF HIGH ENERGY PHYSICS, vol. 0610, no. 10, page. 26, 2006-10
PHYSICS LETTERS B, vol. 637, no. 4-5, page. 298 - 309, 2006-06-15
JOURNAL OF HIGH ENERGY PHYSICS, vol. 0601, no. 1, page. 1 - 124, 2006-01