@article{Wu2017, author = "Rengmao Wu and Liang Xu and Peng Liu and Yaqin Zhang and Zhenrong Zheng and Haifeng Li and Xu Liu", title = "{Media 1: Freeform illumination design: a nonlinear boundary problem for the elliptic Monge–Ampére equation}", year = "2017", month = "4", url = "https://opticapublishing.figshare.com/articles/media/Media_1_Freeform_illumination_design_a_nonlinear_boundary_problem_for_the_elliptic_Monge_Amp_re_equation/4919600", doi = "10.1364/OL.38.000229.m001" }