Park, Sang-Il; Xiong, Yujie; Kim, Rak-Hwan; Elvikis, Paulius; Meitl, Matthew; Kim, Dae-Hyeong; Wu, Jian; Yoon, Jongseung; Yu, Chang-Jae; Liu, Zhuangjian; Huang, Yonggang; Hwang, Keh-chih; Ferreira, Placid; Li, Xiuling; Choquette, Kent; Rogers, John A.
Science, Vol.325 No.5943, pp.977-981