MSSM Higgs sector CP violation at photon colliders: revisited Saebyok Bae, Byungchul Chung and P. Ko Eur. Phys. J. C, 54 4 (2008) 601-616 Published online: 28 February 2008 DOI: 10.1140/epjc/s10052-008-0546-1