U- and E-Service, Science and Technology - Ma, Jianhua; Fang, Wai-Chi; Park, Byungjoo; Fang, Wai-chi; Kang, Byeong-Ho; Kim, Tai-hoon; Ma, Jianhua; Park, Byungjoo; Slezak, Dominik (Springer Berlin Heidelberg, 2010)