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Optics Express|August 20, 2008
Freeform LED lens for uniform illuminationYi Ding, Xu Liu, Zhen-rong Zheng, et al.Applied Optics|May 2, 2008
Graded wavelike two-dimensional photonic crystal made of thin filmsYi-Yu Li, Ming-Yu Li, Pei-Fu Gu, et al.Pageof 1