Song Young Min, Jang Sung Jun, Yu Jae Su, Lee Yong Tak
Department of Information and Communication, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Korea.
Small. 2010 May 7;6(9):984-7. doi: 10.1002/smll.201000079.