Doctoral thesis (2004) - J Han (author) , Ted Young (promotor) , Pieter Jonker (copromotor) , PM Dewilde (copromotor) , P Hadley (copromotor) , H Corporaal (copromotor) , H Yun He (copromotor) , M Forshaw (copromotor) , L Van Vliet (copromotor)