An erratum is presented to correct equations (10a), (11a) and (11b) in [Opt. Express 17, 1308–1320 (2009)].
©2009 Optical Society of America
The corrections of typographical errors of equations (10a), (11a) and (11b) in Ref.  should be like the following forms:
The authors regret this mistake, which does not affect any numerical result presented or conclusions reached in Ref. .
References and links
1. J. Hu, X. Zhou, and G. Hu, “Design method for electromagnetic cloak with arbitrary shapes based on Laplace’s equation,” Opt. Express 17, 1308–1320 (2009).
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