Li, Lifeng Hypersingularity, electromagnetic edge condition, and an analytic hyperbolic wedge model. [electronic resource] - Journal of the Optical Society of America. A, Optics, image science, and vision Apr 2014 - 808-17 p. digital Publication Type: Journal Article ISSN: 1520-8532 Standard No.: 10.1364/JOSAA.31.000808 doi